In a ratio, both outer terms are prime numbers, their product is 6, one inner term of this ratio is 4, and what is the other inner term.
在一个比例里，两个外项都是质数，他们的积是6，这个比例的一个内项是4，另一个内项是多少．
<gadget id="calculator">6 / 4</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>