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Finding the Fourth Proportional to 8,591.76, 12,877.65 and 7,034.40

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Solution

The fourth proportional to 8,591.76, 12,877.65 and 7,034.40 is: 10,543.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,591.76 : 12,877.65 = 7,034.40 : x
  2. Step 2: Convert to fraction form
    8,591.76/12,877.65 = 7,034.40/x
  3. Step 3: Cross multiply
    8,591.76x = 12,877.65 × 7,034.40
  4. Step 4: Simplify right side
    8,591.76x = 90,586,541.16
  5. Step 5: Solve for x
    x = 90,586,541.16/8,591.76
  6. Step 6: Final answer
    x = 10,543.42

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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.