题目内容：

Entrepreneurs also have an incentive to discover new products that are highly valued ralative to their cost of production.
其中 ralative to 做什么成分,为何用形容词?

优质解答

这里relative to their cost of production是修饰前面的highly valued
全句：
企业家们也会有动力去发现较之生产成本而具有高价值的新产品.