Rule of three calculator
Direct proportion solver: if A relates to B, then C relates to X.
Find the unknown in a proportional relationship.
如何使用此工具
- Enter the first pair (A and B).
- Enter the third value C.
- Read X, the proportional answer.
- Adjust for variations and compare.
典型使用场景
- Scaling a recipe up or down.
- Finding paint or fertilizer coverage from a pilot patch.
限制与注意事项
- Assumes a linear (direct) proportional relationship.
- Does not handle compound rule of three with three or more pairs.
本页的隐私说明
产品分析标签（若日后添加）应在获得同意后再加载。本站不强制加载第三方跟踪器。
The rule of three solves daily proportional questions like recipe scaling, paint coverage and unit pricing without a calculator app. Inputs stay in your browser.