Finding the Fourth Proportional to 1,501.68, 2,072.16 and 872.09
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Solution
The fourth proportional to 1,501.68, 2,072.16 and 872.09 is: 1,203.39
Step by Step Solution
- Step 1: Write the proportion equation
1,501.68 : 2,072.16 = 872.09 : x - Step 2: Convert to fraction form
1,501.68/2,072.16 = 872.09/x - Step 3: Cross multiply
1,501.68x = 2,072.16 × 872.09 - Step 4: Simplify right side
1,501.68x = 1,807,099.65 - Step 5: Solve for x
x = 1,807,099.65/1,501.68 - Step 6: Final answer
x = 1,203.39
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.