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Finding the Fourth Proportional to 8,691.78, 13,027.22 and 4,005.36

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Solution

The fourth proportional to 8,691.78, 13,027.22 and 4,005.36 is: 6,003.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691.78 : 13,027.22 = 4,005.36 : x
  2. Step 2: Convert to fraction form
    8,691.78/13,027.22 = 4,005.36/x
  3. Step 3: Cross multiply
    8,691.78x = 13,027.22 × 4,005.36
  4. Step 4: Simplify right side
    8,691.78x = 52,178,705.90
  5. Step 5: Solve for x
    x = 52,178,705.90/8,691.78
  6. Step 6: Final answer
    x = 6,003.22

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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.