Finding the Fourth Proportional to 8,660.98, 11,950.62 and 5,122.90
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Solution
The fourth proportional to 8,660.98, 11,950.62 and 5,122.90 is: 7,068.70
Step by Step Solution
- Step 1: Write the proportion equation
8,660.98 : 11,950.62 = 5,122.90 : x - Step 2: Convert to fraction form
8,660.98/11,950.62 = 5,122.90/x - Step 3: Cross multiply
8,660.98x = 11,950.62 × 5,122.90 - Step 4: Simplify right side
8,660.98x = 61,221,831.20 - Step 5: Solve for x
x = 61,221,831.20/8,660.98 - Step 6: Final answer
x = 7,068.70
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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.