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Finding the Fourth Proportional to 7,251.12, 10,868.16 and 3,089.88

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Solution

The fourth proportional to 7,251.12, 10,868.16 and 3,089.88 is: 4,631.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,251.12 : 10,868.16 = 3,089.88 : x
  2. Step 2: Convert to fraction form
    7,251.12/10,868.16 = 3,089.88/x
  3. Step 3: Cross multiply
    7,251.12x = 10,868.16 × 3,089.88
  4. Step 4: Simplify right side
    7,251.12x = 33,581,310.22
  5. Step 5: Solve for x
    x = 33,581,310.22/7,251.12
  6. Step 6: Final answer
    x = 4,631.19

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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.