What is 3/8 of 98?
Often, in mathematics or everyday life, we need to find a fraction of a given number. For instance, how would you quickly calculate 3/8 of 98? We'll show you a straightforward method to achieve that.
How to calculate 3/8 of 98?
- Multiply the whole number by the numerator of the fraction: 98 × 3 = 294
- Divide this result by denominator of the fraction: 294/8 = 36.75
- Simplify by dividing both the numerator and denominator by their GCD (2):
- 294/2 = 147
- 8/2 = 4
- Which gives: 147/4
Since 147/4 is an improper fraction, the result could also be expressed as a mixed number: 36 3/4
How does it work?
The principle behind finding a fraction of a number, such as 3/8 of 98, is rooted in the method of cross-multiplication.
Consider the following proportion: (where x represents 3/8 of 98)
- Using the cross-multiplication method, multiply both numerators by their opposite denominators:
- Which gives:
- Divide both sides by 8 to isolate x:
- Which gives the result: (or )
Thus, 3/8 of 98 is equal to 147/4 (or 36.75 in its decimal form).