If 3 is added to the latter term of the first ratio in 3:4=6:8, how much should be added to the latter term of the second ratio to make the equation true.
如果把3：4=6：8中第一个比的后项加上3，要使等式成立，第二个比的后项应该加上多少．
<gadget id="calculator">14 - 8</gadget>
<output>6</output>

<result>6</result>