1. What is a Proportion Calculator?

Definition: This calculator solves proportion equations of the form A/B = C/D when three values are known and the fourth is unknown.

Purpose: It helps solve ratio problems in mathematics, chemistry, cooking, construction, and many other fields.

2. How Does the Proportion Calculator Work?

The calculator uses the formula:

Where:

• \( A \) — First term in the first ratio
• \( B \) — Second term in the first ratio
• \( C \) — First term in the second ratio
• \( D \) — Second term in the second ratio

Explanation: Enter any three known values and the calculator will solve for the fourth unknown value using cross-multiplication.

3. Importance of Proportion Calculations

Details: Proportions are fundamental in scaling recipes, mixing chemicals, calculating dimensions, and solving many real-world problems.

4. Using the Calculator

Tips: Enter any three values and leave one field empty. The calculator will solve for the missing value. All values are unitless.

5. Frequently Asked Questions (FAQ)

Q1: What if I enter all four values?
A: The calculator will verify if the proportion holds true (A×D = B×C).

Q2: Can I use this for percentage problems?
A: Yes, percentages are just proportions scaled to 100.

Q3: What if I leave more than one field empty?
A: The calculator needs exactly three known values to solve for one unknown.

Q4: Can I use negative numbers?
A: Mathematically yes, but in most real-world applications, proportions use positive numbers.

Q5: How precise are the calculations?
A: Results are calculated to high precision and displayed to 3 decimal places.