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Finding the Fourth Proportional to 8,912.43, 13,368.11 and 2,338.47

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Solution

The fourth proportional to 8,912.43, 13,368.11 and 2,338.47 is: 3,507.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.43 : 13,368.11 = 2,338.47 : x
  2. Step 2: Convert to fraction form
    8,912.43/13,368.11 = 2,338.47/x
  3. Step 3: Cross multiply
    8,912.43x = 13,368.11 × 2,338.47
  4. Step 4: Simplify right side
    8,912.43x = 31,260,912.50
  5. Step 5: Solve for x
    x = 31,260,912.50/8,912.43
  6. Step 6: Final answer
    x = 3,507.56

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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.