Home / 3,939.20-5,901.60-2,398.40

Finding the Fourth Proportional to 3,939.20, 5,901.60 and 2,398.40

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Solution

The fourth proportional to 3,939.20, 5,901.60 and 2,398.40 is: 3,593.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.20 : 5,901.60 = 2,398.40 : x
  2. Step 2: Convert to fraction form
    3,939.20/5,901.60 = 2,398.40/x
  3. Step 3: Cross multiply
    3,939.20x = 5,901.60 × 2,398.40
  4. Step 4: Simplify right side
    3,939.20x = 14,154,397.44
  5. Step 5: Solve for x
    x = 14,154,397.44/3,939.20
  6. Step 6: Final answer
    x = 3,593.22

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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.