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Ratio and Proportion Calculator

Solve the missing value in an equivalent-ratio proportion. Files and text are processed in your browser.

Solve equivalent ratios

Enter A : B = C : x. The unknown x is solved as (B × C) ÷ A.

The x field is a comparison value; this version solves only for the fourth term.

What is Ratio and Proportion Calculator?

Ratio and Proportion Calculator is a browser-based utility for solve the missing value in an equivalent-ratio proportion.

How to Use Ratio and Proportion Calculator

  1. 1Enter or select your input using the controls below.
  2. 2Adjust the available options.
  3. 3Preview the result and download or copy it.

How Does Ratio and Proportion Calculator Work?

The tool processes your input locally in the browser and produces the result without uploading your content to a SunloopMedia server.

Frequently Asked Questions

Which value does the calculator solve?

It solves the fourth value x in the proportion A : B = C : x using x = (B × C) ÷ A.

Can A be zero?

No. A cannot be zero because it is the divisor in the proportion formula.

Is my input uploaded or stored?

No. This tool processes your input in your browser. SunloopMedia does not receive or store the content you enter here.

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