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Finding the Fourth Proportional to 3,958.58, 5,939.92 and 2,871.92

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Solution

The fourth proportional to 3,958.58, 5,939.92 and 2,871.92 is: 4,309.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,958.58 : 5,939.92 = 2,871.92 : x
  2. Step 2: Convert to fraction form
    3,958.58/5,939.92 = 2,871.92/x
  3. Step 3: Cross multiply
    3,958.58x = 5,939.92 × 2,871.92
  4. Step 4: Simplify right side
    3,958.58x = 17,058,975.05
  5. Step 5: Solve for x
    x = 17,058,975.05/3,958.58
  6. Step 6: Final answer
    x = 4,309.37

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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.