Proportion Calculator
Solving Proportions
A proportion is an equation stating that two ratios are equal. This calculator solves for the unknown value 'x' in a proportion like A/B = C/x.
Solving for 'x'
To solve for 'x', you can use cross-multiplication. Multiply the values diagonally across the equals sign and then solve for the variable.
$$ \frac{A}{B} = \frac{C}{x} \implies A \cdot x = B \cdot C \implies x = \frac{B \cdot C}{A} $$
Enter three values to solve for 'x'.
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