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Finding the Fourth Proportional to 7,115.76, 10,674.98 and 2,732.88

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Solution

The fourth proportional to 7,115.76, 10,674.98 and 2,732.88 is: 4,099.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,115.76 : 10,674.98 = 2,732.88 : x
  2. Step 2: Convert to fraction form
    7,115.76/10,674.98 = 2,732.88/x
  3. Step 3: Cross multiply
    7,115.76x = 10,674.98 × 2,732.88
  4. Step 4: Simplify right side
    7,115.76x = 29,173,439.34
  5. Step 5: Solve for x
    x = 29,173,439.34/7,115.76
  6. Step 6: Final answer
    x = 4,099.83

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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.