Home / 3,399.20-5,099.76-1,939.40

Finding the Fourth Proportional to 3,399.20, 5,099.76 and 1,939.40

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Solution

The fourth proportional to 3,399.20, 5,099.76 and 1,939.40 is: 2,909.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,399.20 : 5,099.76 = 1,939.40 : x
  2. Step 2: Convert to fraction form
    3,399.20/5,099.76 = 1,939.40/x
  3. Step 3: Cross multiply
    3,399.20x = 5,099.76 × 1,939.40
  4. Step 4: Simplify right side
    3,399.20x = 9,890,474.54
  5. Step 5: Solve for x
    x = 9,890,474.54/3,399.20
  6. Step 6: Final answer
    x = 2,909.65

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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.