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Finding the Fourth Proportional to 8,781.60, 13,172.42 and 3,587.48

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Solution

The fourth proportional to 8,781.60, 13,172.42 and 3,587.48 is: 5,381.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.60 : 13,172.42 = 3,587.48 : x
  2. Step 2: Convert to fraction form
    8,781.60/13,172.42 = 3,587.48/x
  3. Step 3: Cross multiply
    8,781.60x = 13,172.42 × 3,587.48
  4. Step 4: Simplify right side
    8,781.60x = 47,255,793.30
  5. Step 5: Solve for x
    x = 47,255,793.30/8,781.60
  6. Step 6: Final answer
    x = 5,381.23

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.