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Finding the Fourth Proportional to 8,702.73, 13,021.29 and 5,179.77

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Solution

The fourth proportional to 8,702.73, 13,021.29 and 5,179.77 is: 7,750.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,702.73 : 13,021.29 = 5,179.77 : x
  2. Step 2: Convert to fraction form
    8,702.73/13,021.29 = 5,179.77/x
  3. Step 3: Cross multiply
    8,702.73x = 13,021.29 × 5,179.77
  4. Step 4: Simplify right side
    8,702.73x = 67,447,287.30
  5. Step 5: Solve for x
    x = 67,447,287.30/8,702.73
  6. Step 6: Final answer
    x = 7,750.13

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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.