Finding the Fourth Proportional to 1,382.08, 2,072.04 and 868
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Solution
The fourth proportional to 1,382.08, 2,072.04 and 868 is: 1,301.32
Step by Step Solution
- Step 1: Write the proportion equation
1,382.08 : 2,072.04 = 868 : x - Step 2: Convert to fraction form
1,382.08/2,072.04 = 868/x - Step 3: Cross multiply
1,382.08x = 2,072.04 × 868 - Step 4: Simplify right side
1,382.08x = 1,798,530.72 - Step 5: Solve for x
x = 1,798,530.72/1,382.08 - Step 6: Final answer
x = 1,301.32
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.