What is x when 54 divided by x equals 39?

To find the answer, just divide the dividend by the quotient: 54 ÷ 39 = 1.3846153846154

To prove this, let's compute 54 divided by 1.3846153846154: $\frac{54}{1.3846153846154} = 39$

How does it work?

Asking what the value of x could be when 54 divided by x gives a result of 39, is equivalent to solving the following equation:

$\frac{54}{x} = 39$

Multiply both sides by x: $\frac{54 x}{x} = 39 x$
$\frac{54 x}{x}$ is equivalent to $\frac{x}{x} \times 54$ , which simplifies to $1 \times 54$ (or just $54$ ).
Thus, the equation becomes: $54 = 39 x$
To find x, divide both sides by 39: $\frac{54}{39} = \frac{39 x}{39}$
Which gives, after simplification: $1.3846153846154 = x$ (or $x = 1.3846153846154$ )

So, if the dividend is 54 and the quotient is 39, the divisor is 1.3846153846154.