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Finding the Fourth Proportional to 8,912.42, 13,368.36 and 3,366.62

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Solution

The fourth proportional to 8,912.42, 13,368.36 and 3,366.62 is: 5,049.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.42 : 13,368.36 = 3,366.62 : x
  2. Step 2: Convert to fraction form
    8,912.42/13,368.36 = 3,366.62/x
  3. Step 3: Cross multiply
    8,912.42x = 13,368.36 × 3,366.62
  4. Step 4: Simplify right side
    8,912.42x = 45,006,188.14
  5. Step 5: Solve for x
    x = 45,006,188.14/8,912.42
  6. Step 6: Final answer
    x = 5,049.83

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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.