mathematics Verified Precision Tool
Ratio Calculator
Solve ratio scales, scale up or down ratios, and find missing ratio terms A:B = C:D.
Calculation Solution
2:3
Greatest Common Divisor: 50
Mathematical Formula
A / B = C / D => D = (B * C) / A
Overview & Explanation
A ratio expresses the quantitative relationship between two amounts showing the number of times one value contains another.
How It Works
- Set up the equivalent ratios A/B = C/D.
- Cross multiply to solve for the unknown term D = (B * C) / A.
Practical Applications
- Scaling cooking recipes.
- Map scale calculations.
- Mixing ingredients in chemistry.
Worked Example: 2:3 = 10:D
Find D.
1
Cross Multiply
D = (3 * 10) / 2
= 15
Frequently Asked Questions
How do you calculate equivalent ratios?
Multiply or divide both terms of a ratio by the same non-zero number.
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