{"book":"adl0290","page":708,"text":"۲۳۸\n\nباب سی و هفتم\n\nاربعه متناسبه\n\n۲۱۲- فرض کنید که سه عدد معلوم است و مطلوب این است که یک عدد دیگر معلوم شود که نسبت آن به عدد سوم مساوی نسبت دوم به اول باشد پس در آن صورت طریق دریافت نمودن عدد چهارم مذکور را اربعه متناسبه می گویند - سوالاتیکه بطریق احدیت حل شده است به اربعه متناسبه نیز حل می شود -\n\n۲۱۳- مثال ۱- قیمت ۱۲ من قند را بحساب ۶۰ روپیه فی ۵ من معلوم کنید -\nظاهر است که اگر وزن اشیاء دو چند یا سه چند یا چهار چند شود قیمت آنها نیز دو چند یا سه چند یا چهار چند میگردد لہذا لازم است که نسبت دو وزن مختلف یک چیز خاص مساوی نسبت دو قیمت اوزان مذکور باشد -","chars":561,"image":"https://storage.googleapis.com/adl-page-images/adl0290/00708.jpg","first_page":1,"last_page":1089,"title":"ʻIlm-i ḥisābعالم حساب","permalink":"https://afghanpress.org/book/adl0290/708","canvas":"https://afghanpress.org/iiif/adl0290/canvas/708","source":"https://afghanistandl.nyu.edu/books/adl0290/","source_pdf":"https://afghanistandl.nyu.edu/pdf/adl0290_download.pdf","rights":{"image":{"statement":"Public domain. NYU states: \"All works presented on this website are, unless otherwise indicated, in the public domain. The images available on this website may be freely reproduced, distributed and transmitted by anyone for any purpose, commercial or non-commercial.\"","uri":"http://rightsstatements.org/vocab/NoC-US/1.0/","holder":"New York University Libraries","source":"https://afghanistandl.nyu.edu/about.html","delivery":"Images are served from a copy mirrored by this project, not from NYU's servers, under the reproduction terms above.","endorsement":"This is an independent project. It is not affiliated with, endorsed by, or reviewed by New York University."},"text":{"statement":"Machine-generated transcription, dedicated to the public domain under CC0 1.0. No warranty of accuracy: see the provenance block on every page.","uri":"https://creativecommons.org/publicdomain/zero/1.0/","holder":"Steps Ventures"}},"provenance":{"text_produced_by":"gemini-3.1-pro-preview","thinking_level":"low","read_completed":"2026-08-09","per_page_confidence":null,"per_page_confidence_note":"Not recorded during the corpus run. No calibrated per-page score exists, and none is estimated here.","human_reviewed":false,"accuracy_context":"Roughly two thirds of characters agree with a modern printed edition of the same text. Much of the disagreement is editorial, not misreading. Treat the transcription as a finding aid and read the page image before quoting.","primary_source":"The page image. The text is an index into it."}}