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Finding the Fourth Proportional to 8,651.28, 12,983.22 and 5,871.36

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Solution

The fourth proportional to 8,651.28, 12,983.22 and 5,871.36 is: 8,811.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,651.28 : 12,983.22 = 5,871.36 : x
  2. Step 2: Convert to fraction form
    8,651.28/12,983.22 = 5,871.36/x
  3. Step 3: Cross multiply
    8,651.28x = 12,983.22 × 5,871.36
  4. Step 4: Simplify right side
    8,651.28x = 76,229,158.58
  5. Step 5: Solve for x
    x = 76,229,158.58/8,651.28
  6. Step 6: Final answer
    x = 8,811.32

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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.