What is 4/8 of 11?

Often, in mathematics or everyday life, we need to find a fraction of a given number. For instance, how would you quickly calculate 4/8 of 11? We'll show you a straightforward method to achieve that.

How to calculate 4/8 of 11?

  1. Multiply the whole number by the numerator of the fraction: 11 × 4 = 44
  2. Divide this result by denominator of the fraction: 44/8 = 5.5
  3. Simplify by dividing both the numerator and denominator by their GCD (4):
    • 44/4 = 11
    • 8/4 = 2
  4. Which gives: 11/2

Since 11/2 is an improper fraction, the result could also be expressed as a mixed number: 5 1/2

How does it work?

The principle behind finding a fraction of a number, such as 4/8 of 11, is rooted in the method of cross-multiplication.

Consider the following proportion: 4 8 = x 11 (where x represents 4/8 of 11)

  1. Using the cross-multiplication method, multiply both numerators by their opposite denominators: 4 × 11 = 8 x
  2. Which gives: 44 = 8 x
  3. Divide both sides by 8 to isolate x: 44 8 = 8 x 8
  4. Which gives the result: 44 8 = x (or 11 2 = x )

Thus, 4/8 of 11 is equal to 11/2 (or 5.5 in its decimal form).