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Finding the Fourth Proportional to 3,488.76, 5,229.90 and 2,763

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Solution

The fourth proportional to 3,488.76, 5,229.90 and 2,763 is: 4,141.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,488.76 : 5,229.90 = 2,763 : x
  2. Step 2: Convert to fraction form
    3,488.76/5,229.90 = 2,763/x
  3. Step 3: Cross multiply
    3,488.76x = 5,229.90 × 2,763
  4. Step 4: Simplify right side
    3,488.76x = 14,450,213.70
  5. Step 5: Solve for x
    x = 14,450,213.70/3,488.76
  6. Step 6: Final answer
    x = 4,141.93

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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.