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Finding the Fourth Proportional to 8,912.43, 13,368.69 and 5,448.87

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Solution

The fourth proportional to 8,912.43, 13,368.69 and 5,448.87 is: 8,173.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.43 : 13,368.69 = 5,448.87 : x
  2. Step 2: Convert to fraction form
    8,912.43/13,368.69 = 5,448.87/x
  3. Step 3: Cross multiply
    8,912.43x = 13,368.69 × 5,448.87
  4. Step 4: Simplify right side
    8,912.43x = 72,844,253.88
  5. Step 5: Solve for x
    x = 72,844,253.88/8,912.43
  6. Step 6: Final answer
    x = 8,173.33

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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.