What is 8/7 of 4?

How to calculate 8/7 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: 32/7 = 4.5714285714286

Since 32/7 is an improper fraction, the result could also be expressed as a mixed number: 4 4/7

How does it work?

The principle behind finding a fraction of a number, such as 8/7 of 4, is rooted in the method of cross-multiplication.

Consider the following proportion: $\frac{8}{7}=\frac{x}{4}$ (where x represents 8/7 of 4)

1. Using the cross-multiplication method, multiply both numerators by their opposite denominators: $8\times 4=7x$
2. Which gives: $32=7x$
3. Divide both sides by 7 to isolate x: $\frac{32}{7}=\frac{7x}{7}$
4. Which gives the result: $\frac{32}{7}=x$

Thus, 8/7 of 4 is equal to 32/7 (or 4.5714285714286 in its decimal form).