Finding the Fourth Proportional to 2,658.09, 3,987.15 and 926.31
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Solution
The fourth proportional to 2,658.09, 3,987.15 and 926.31 is: 1,389.47
Step by Step Solution
- Step 1: Write the proportion equation
2,658.09 : 3,987.15 = 926.31 : x - Step 2: Convert to fraction form
2,658.09/3,987.15 = 926.31/x - Step 3: Cross multiply
2,658.09x = 3,987.15 × 926.31 - Step 4: Simplify right side
2,658.09x = 3,693,336.92 - Step 5: Solve for x
x = 3,693,336.92/2,658.09 - Step 6: Final answer
x = 1,389.47
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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.