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Finding the Fourth Proportional to 8,671.64, 13,001.18 and 5,153.29

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Solution

The fourth proportional to 8,671.64, 13,001.18 and 5,153.29 is: 7,726.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,671.64 : 13,001.18 = 5,153.29 : x
  2. Step 2: Convert to fraction form
    8,671.64/13,001.18 = 5,153.29/x
  3. Step 3: Cross multiply
    8,671.64x = 13,001.18 × 5,153.29
  4. Step 4: Simplify right side
    8,671.64x = 66,998,792.61
  5. Step 5: Solve for x
    x = 66,998,792.61/8,671.64
  6. Step 6: Final answer
    x = 7,726.20

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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.