Home / 5,138.28-7,091.46-3,149.10

Finding the Fourth Proportional to 5,138.28, 7,091.46 and 3,149.10

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Solution

The fourth proportional to 5,138.28, 7,091.46 and 3,149.10 is: 4,346.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.28 : 7,091.46 = 3,149.10 : x
  2. Step 2: Convert to fraction form
    5,138.28/7,091.46 = 3,149.10/x
  3. Step 3: Cross multiply
    5,138.28x = 7,091.46 × 3,149.10
  4. Step 4: Simplify right side
    5,138.28x = 22,331,716.69
  5. Step 5: Solve for x
    x = 22,331,716.69/5,138.28
  6. Step 6: Final answer
    x = 4,346.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.