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Finding the Fourth Proportional to 8,576.52, 12,864.80 and 3,381.72

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Solution

The fourth proportional to 8,576.52, 12,864.80 and 3,381.72 is: 5,072.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,576.52 : 12,864.80 = 3,381.72 : x
  2. Step 2: Convert to fraction form
    8,576.52/12,864.80 = 3,381.72/x
  3. Step 3: Cross multiply
    8,576.52x = 12,864.80 × 3,381.72
  4. Step 4: Simplify right side
    8,576.52x = 43,505,151.46
  5. Step 5: Solve for x
    x = 43,505,151.46/8,576.52
  6. Step 6: Final answer
    x = 5,072.59

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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.