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Finding the Fourth Proportional to 8,640.03, 11,912.33 and 5,651.13

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Solution

The fourth proportional to 8,640.03, 11,912.33 and 5,651.13 is: 7,791.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640.03 : 11,912.33 = 5,651.13 : x
  2. Step 2: Convert to fraction form
    8,640.03/11,912.33 = 5,651.13/x
  3. Step 3: Cross multiply
    8,640.03x = 11,912.33 × 5,651.13
  4. Step 4: Simplify right side
    8,640.03x = 67,318,125.43
  5. Step 5: Solve for x
    x = 67,318,125.43/8,640.03
  6. Step 6: Final answer
    x = 7,791.42

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.