Home / 3,407.10-5,121.45-3,147.90

Finding the Fourth Proportional to 3,407.10, 5,121.45 and 3,147.90

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Solution

The fourth proportional to 3,407.10, 5,121.45 and 3,147.90 is: 4,731.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,407.10 : 5,121.45 = 3,147.90 : x
  2. Step 2: Convert to fraction form
    3,407.10/5,121.45 = 3,147.90/x
  3. Step 3: Cross multiply
    3,407.10x = 5,121.45 × 3,147.90
  4. Step 4: Simplify right side
    3,407.10x = 16,121,812.46
  5. Step 5: Solve for x
    x = 16,121,812.46/3,407.10
  6. Step 6: Final answer
    x = 4,731.83

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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.