In a ratio, the product of the two outer terms is the reciprocal of each other, one of the inner terms is (3/4), and what is the other inner term.
在一个比例中，两外项之积互为倒数，其中一个内项是(3/4)，另一个内项是多少．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 / (3/4)</gadget>
<output>4/3 = around 1.333333</output>

<result>4/3 = around 1.333333</result>