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Finding the Fourth Proportional to 8,912.40, 13,397.40 and 6,333.20

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Solution

The fourth proportional to 8,912.40, 13,397.40 and 6,333.20 is: 9,520.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.40 : 13,397.40 = 6,333.20 : x
  2. Step 2: Convert to fraction form
    8,912.40/13,397.40 = 6,333.20/x
  3. Step 3: Cross multiply
    8,912.40x = 13,397.40 × 6,333.20
  4. Step 4: Simplify right side
    8,912.40x = 84,848,413.68
  5. Step 5: Solve for x
    x = 84,848,413.68/8,912.40
  6. Step 6: Final answer
    x = 9,520.27

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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.