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Finding the Fourth Proportional to 8,781.00, 13,171.51 and 3,586.87

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Solution

The fourth proportional to 8,781.00, 13,171.51 and 3,586.87 is: 5,380.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.00 : 13,171.51 = 3,586.87 : x
  2. Step 2: Convert to fraction form
    8,781.00/13,171.51 = 3,586.87/x
  3. Step 3: Cross multiply
    8,781.00x = 13,171.51 × 3,586.87
  4. Step 4: Simplify right side
    8,781.00x = 47,244,518.04
  5. Step 5: Solve for x
    x = 47,244,518.04/8,781.00
  6. Step 6: Final answer
    x = 5,380.31

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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.