Enter one value in the calculator below to convert between the “3-part” and “4-part” values in a fixed 4:3 ratio.

4:3 Ratio Calculator

Enter exactly one value to convert between the 3-part and 4-part values in a 4:3 ratio.

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4:3 Ratio Formula

The following formula is used to convert a value representing the 3-part of a 4:3 ratio into the corresponding 4-part value.

R = (4/3) * V

Variables:

  • R is the corresponding 4-part value
  • V is the given 3-part value

To convert from the 3-part to the 4-part, multiply the given value by 4/3. To convert the other way (from the 4-part to the 3-part), multiply by 3/4.

What is a 4:3 Ratio?

A 4:3 ratio is a proportional relationship between two quantities where the first quantity is in the proportion of 4 to the second quantity’s 3. This means the first quantity is 4/3 (about 1.333×) the second, or equivalently, for every 4 units of the first quantity there are 3 units of the second. This ratio is often used to describe the aspect ratio of images, screens, and photographs. For example, in a 4:3 aspect ratio, the width of an image is 4 units while the height is 3 units. This ratio was standard for many older television screens and computer monitors before the wide adoption of widescreen displays.

How to Calculate 4:3 Ratio?

The following steps outline how to calculate the 4:3 Ratio using the formula R = (4/3) * V.

  1. First, determine the given value (V) that represents the 3-part of the ratio.
  2. Next, substitute the value of V into the formula R = (4/3) * V.
  3. Next, calculate the result (R) by multiplying (4/3) with the value of V.
  4. Finally, the result (R) will be the corresponding value for the 4-part of the 4:3 ratio.
  5. After inserting the value of V and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

Given value (V) = 12

Result (R) = (4/3) × 12 = 16