Solve for X where A : B = C : X
:=:
X
How to use Ratio Calculator
- Know Ratios: Enter the values for A and B.
- Target: Enter the known value for C.
- Calculate: The tool solves for X to keep the ratio constant.
About Ratio Calculator
The Ratio Calculator solves "Three Rule" proportions. If you know that A is to B as C is to X, this tool finds X.
It is perfect for scaling recipes (cooking), resizing images (aspect ratio), or creating map scales.