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Finding the Fourth Proportional to 8,717.76, 13,084.80 and 4,337.28

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Solution

The fourth proportional to 8,717.76, 13,084.80 and 4,337.28 is: 6,509.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,717.76 : 13,084.80 = 4,337.28 : x
  2. Step 2: Convert to fraction form
    8,717.76/13,084.80 = 4,337.28/x
  3. Step 3: Cross multiply
    8,717.76x = 13,084.80 × 4,337.28
  4. Step 4: Simplify right side
    8,717.76x = 56,752,441.34
  5. Step 5: Solve for x
    x = 56,752,441.34/8,717.76
  6. Step 6: Final answer
    x = 6,509.98

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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.