What is 8/1 of 4?

Often, in mathematics or everyday life, we need to find a fraction of a given number. For instance, how would you quickly calculate 8/1 of 4? We'll show you a straightforward method to achieve that.

How to calculate 8/1 of 4?

  1. Multiply the whole number by the numerator of the fraction: 4 × 8 = 32
  2. Divide this result by denominator of the fraction: 32/1 = 32

How does it work?

The principle behind finding a fraction of a number, such as 8/1 of 4, is rooted in the method of cross-multiplication.

Consider the following proportion: 8 1 = x 4 (where x represents 8/1 of 4)

  1. Using the cross-multiplication method, multiply both numerators by their opposite denominators: 8 × 4 = 1 x
  2. Which gives: 32 = 1 x
  3. Divide both sides by 1 to isolate x: 32 1 = 1 x 1
  4. Which gives the result: 32 1 = x

Thus, 8/1 of 4 is equal to 32/1 (or 32 in its decimal form).