Final answer:
To solve the proportion 2/7 = x/42, cross multiply 2 and 42, then divide the product by 7 to find x, which in this case is 12.
Step-by-step explanation:
To solve the proportion 2/7 = x/42, you start by cross multiplying to find the value of x. You multiply 2 by 42 and then divide by 7 to solve for x:
2 * 42 = x * 7
84 = 7x
x = 84 / 7
x = 12
This is a common method in dealing with proportions known as 'cross multiplication'. In this case, the value of x would be 12, not 42 as mentioned in the reference information.