To multiply 3/16 by 4, you can multiply the numerators (3 * 4) to get 12, and multiply the denominators (16 * 1) to get 16. So, the answer is 12/16. However, this fraction can be simplified by dividing both the numerator and denominator by their greatest common divisor, which is 4. Doing this, we get 12/16 simplifying to 3/4. Therefore, the answer in simplest form is 3/4.
