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Finding the Fourth Proportional to 8,375.64, 12,564.90 and 2,531.76

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Solution

The fourth proportional to 8,375.64, 12,564.90 and 2,531.76 is: 3,798.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,375.64 : 12,564.90 = 2,531.76 : x
  2. Step 2: Convert to fraction form
    8,375.64/12,564.90 = 2,531.76/x
  3. Step 3: Cross multiply
    8,375.64x = 12,564.90 × 2,531.76
  4. Step 4: Simplify right side
    8,375.64x = 31,811,311.22
  5. Step 5: Solve for x
    x = 31,811,311.22/8,375.64
  6. Step 6: Final answer
    x = 3,798.08

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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.