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Finding the Fourth Proportional to 8,515, 12,773.22 and 2,359

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Solution

The fourth proportional to 8,515, 12,773.22 and 2,359 is: 3,538.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,515 : 12,773.22 = 2,359 : x
  2. Step 2: Convert to fraction form
    8,515/12,773.22 = 2,359/x
  3. Step 3: Cross multiply
    8,515x = 12,773.22 × 2,359
  4. Step 4: Simplify right side
    8,515x = 30,132,025.98
  5. Step 5: Solve for x
    x = 30,132,025.98/8,515
  6. Step 6: Final answer
    x = 3,538.70

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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.