What is 4/2 of 19?

How to calculate 4/2 of 19?

1. Multiply the whole number by the numerator of the fraction: 19 × 4 = 76
2. Divide this result by denominator of the fraction: 76/2 = 38
3. Simplify by dividing both the numerator and denominator by their GCD (2):
   • 76/2 = 38
   • 2/2 = 1
4. Which gives: 38/1

How does it work?

The principle behind finding a fraction of a number, such as 4/2 of 19, is rooted in the method of cross-multiplication.

Consider the following proportion: $\frac{4}{2}=\frac{x}{19}$ (where x represents 4/2 of 19)

1. Using the cross-multiplication method, multiply both numerators by their opposite denominators: $4\times 19=2x$
2. Which gives: $76=2x$
3. Divide both sides by 2 to isolate x: $\frac{76}{2}=\frac{2x}{2}$
4. Which gives the result: $\frac{76}{2}=x$ (or $\frac{38}{1}=x$)

Thus, 4/2 of 19 is equal to 38/1 (or 38 in its decimal form).