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Finding the Fourth Proportional to 3,958.36, 5,939.60 and 2,871.69

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Solution

The fourth proportional to 3,958.36, 5,939.60 and 2,871.69 is: 4,309.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,958.36 : 5,939.60 = 2,871.69 : x
  2. Step 2: Convert to fraction form
    3,958.36/5,939.60 = 2,871.69/x
  3. Step 3: Cross multiply
    3,958.36x = 5,939.60 × 2,871.69
  4. Step 4: Simplify right side
    3,958.36x = 17,056,697.10
  5. Step 5: Solve for x
    x = 17,056,697.10/3,958.36
  6. Step 6: Final answer
    x = 4,309.03

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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.