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Finding the Fourth Proportional to 8,451.80, 12,679.52 and 2,529.15

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Solution

The fourth proportional to 8,451.80, 12,679.52 and 2,529.15 is: 3,794.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,451.80 : 12,679.52 = 2,529.15 : x
  2. Step 2: Convert to fraction form
    8,451.80/12,679.52 = 2,529.15/x
  3. Step 3: Cross multiply
    8,451.80x = 12,679.52 × 2,529.15
  4. Step 4: Simplify right side
    8,451.80x = 32,068,395.36
  5. Step 5: Solve for x
    x = 32,068,395.36/8,451.80
  6. Step 6: Final answer
    x = 3,794.27

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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.