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Finding the Fourth Proportional to 3,488.68, 5,231.90 and 1,540.84

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Solution

The fourth proportional to 3,488.68, 5,231.90 and 1,540.84 is: 2,310.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,488.68 : 5,231.90 = 1,540.84 : x
  2. Step 2: Convert to fraction form
    3,488.68/5,231.90 = 1,540.84/x
  3. Step 3: Cross multiply
    3,488.68x = 5,231.90 × 1,540.84
  4. Step 4: Simplify right side
    3,488.68x = 8,061,520.80
  5. Step 5: Solve for x
    x = 8,061,520.80/3,488.68
  6. Step 6: Final answer
    x = 2,310.77

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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.