What is 3/9 of 49?

Often, in mathematics or everyday life, we need to find a fraction of a given number. For instance, how would you quickly calculate 3/9 of 49? We'll show you a straightforward method to achieve that.

How to calculate 3/9 of 49?

  1. Multiply the whole number by the numerator of the fraction: 49 × 3 = 147
  2. Divide this result by denominator of the fraction: 147/9 = 16.333333333333
  3. Simplify by dividing both the numerator and denominator by their GCD (3):
    • 147/3 = 49
    • 9/3 = 3
  4. Which gives: 49/3

Since 49/3 is an improper fraction, the result could also be expressed as a mixed number: 16 1/3

How does it work?

The principle behind finding a fraction of a number, such as 3/9 of 49, is rooted in the method of cross-multiplication.

Consider the following proportion: 3 9 = x 49 (where x represents 3/9 of 49)

  1. Using the cross-multiplication method, multiply both numerators by their opposite denominators: 3 × 49 = 9 x
  2. Which gives: 147 = 9 x
  3. Divide both sides by 9 to isolate x: 147 9 = 9 x 9
  4. Which gives the result: 147 9 = x (or 49 3 = x )

Thus, 3/9 of 49 is equal to 49/3 (or 16.333333333333 in its decimal form).