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Finding the Fourth Proportional to 2,491.12, 3,737.22 and 759.88

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Solution

The fourth proportional to 2,491.12, 3,737.22 and 759.88 is: 1,139.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.12 : 3,737.22 = 759.88 : x
  2. Step 2: Convert to fraction form
    2,491.12/3,737.22 = 759.88/x
  3. Step 3: Cross multiply
    2,491.12x = 3,737.22 × 759.88
  4. Step 4: Simplify right side
    2,491.12x = 2,839,838.73
  5. Step 5: Solve for x
    x = 2,839,838.73/2,491.12
  6. Step 6: Final answer
    x = 1,139.98

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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.