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Finding the Fourth Proportional to 5,998.38, 8,979.12 and 3,913.90

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Solution

The fourth proportional to 5,998.38, 8,979.12 and 3,913.90 is: 5,858.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,998.38 : 8,979.12 = 3,913.90 : x
  2. Step 2: Convert to fraction form
    5,998.38/8,979.12 = 3,913.90/x
  3. Step 3: Cross multiply
    5,998.38x = 8,979.12 × 3,913.90
  4. Step 4: Simplify right side
    5,998.38x = 35,143,355.32
  5. Step 5: Solve for x
    x = 35,143,355.32/5,998.38
  6. Step 6: Final answer
    x = 5,858.81

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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.