About 比例求解器
求解比例和交叉相乘
Use this free online 数学工具 tool to work faster without installing extra software. The interface is built for quick input, clear output, and straightforward results on desktop and mobile devices.
求解比例和交叉相乘
Solve Proportion: A/B = C/D
Leave one field empty to solve for it
D =
8
3/4 = 6/?
Cross Multiplication Method
A × D = B × C
3 × 8 = 4 × 6
Direct Proportion Calculator
If X increases, Y increases proportionally
Inverse Proportion Calculator
If X increases, Y decreases proportionally
Percentage Proportion
X is what percent of Y? Or X% of Y is what?
25 is 25.00% of 100
Common Proportions
求解比例和交叉相乘
Use this free online 数学工具 tool to work faster without installing extra software. The interface is built for quick input, clear output, and straightforward results on desktop and mobile devices.
This tool runs in your browser whenever possible, which keeps your inputs private and reduces unnecessary round-trips to the server.