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Finding the Fourth Proportional to 8,912.72, 13,372.14 and 3,367.67

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Solution

The fourth proportional to 8,912.72, 13,372.14 and 3,367.67 is: 5,052.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.72 : 13,372.14 = 3,367.67 : x
  2. Step 2: Convert to fraction form
    8,912.72/13,372.14 = 3,367.67/x
  3. Step 3: Cross multiply
    8,912.72x = 13,372.14 × 3,367.67
  4. Step 4: Simplify right side
    8,912.72x = 45,032,871.01
  5. Step 5: Solve for x
    x = 45,032,871.01/8,912.72
  6. Step 6: Final answer
    x = 5,052.65

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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.