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Finding the Fourth Proportional to 8,961.60, 13,431.04 and 3,761.44

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Solution

The fourth proportional to 8,961.60, 13,431.04 and 3,761.44 is: 5,637.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,961.60 : 13,431.04 = 3,761.44 : x
  2. Step 2: Convert to fraction form
    8,961.60/13,431.04 = 3,761.44/x
  3. Step 3: Cross multiply
    8,961.60x = 13,431.04 × 3,761.44
  4. Step 4: Simplify right side
    8,961.60x = 50,520,051.10
  5. Step 5: Solve for x
    x = 50,520,051.10/8,961.60
  6. Step 6: Final answer
    x = 5,637.39

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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.