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Finding the Fourth Proportional to 8,251.15, 12,347.15 and 7,144.38

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Solution

The fourth proportional to 8,251.15, 12,347.15 and 7,144.38 is: 10,690.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,251.15 : 12,347.15 = 7,144.38 : x
  2. Step 2: Convert to fraction form
    8,251.15/12,347.15 = 7,144.38/x
  3. Step 3: Cross multiply
    8,251.15x = 12,347.15 × 7,144.38
  4. Step 4: Simplify right side
    8,251.15x = 88,212,731.52
  5. Step 5: Solve for x
    x = 88,212,731.52/8,251.15
  6. Step 6: Final answer
    x = 10,690.96

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1.5x scale

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.