# How do you determine the constant of proportionality if E is inversely proportional to z and z=4 when E=6?

May 22, 2018

$24$

#### Explanation:

If $E$ is inversely proportional to $z$ by some constant $k$, then we have the equation:

$E = \frac{k}{z}$

When $E = 6 , z = 4$, and therefore the constant of proportionality is:

$k = E \cdot z$

$= 6 \cdot 4$

$= 24$