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Finding the Fourth Proportional to 7,472.70, 11,207.49 and 2,791.85

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Solution

The fourth proportional to 7,472.70, 11,207.49 and 2,791.85 is: 4,187.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,472.70 : 11,207.49 = 2,791.85 : x
  2. Step 2: Convert to fraction form
    7,472.70/11,207.49 = 2,791.85/x
  3. Step 3: Cross multiply
    7,472.70x = 11,207.49 × 2,791.85
  4. Step 4: Simplify right side
    7,472.70x = 31,289,574.92
  5. Step 5: Solve for x
    x = 31,289,574.92/7,472.70
  6. Step 6: Final answer
    x = 4,187.18

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.