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Finding the Fourth Proportional to 8,524.28, 12,769.86 and 4,815.02

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Solution

The fourth proportional to 8,524.28, 12,769.86 and 4,815.02 is: 7,213.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,524.28 : 12,769.86 = 4,815.02 : x
  2. Step 2: Convert to fraction form
    8,524.28/12,769.86 = 4,815.02/x
  3. Step 3: Cross multiply
    8,524.28x = 12,769.86 × 4,815.02
  4. Step 4: Simplify right side
    8,524.28x = 61,487,131.30
  5. Step 5: Solve for x
    x = 61,487,131.30/8,524.28
  6. Step 6: Final answer
    x = 7,213.18

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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.