Home / 3,778.20-5,209.20-3,149.64

Finding the Fourth Proportional to 3,778.20, 5,209.20 and 3,149.64

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Solution

The fourth proportional to 3,778.20, 5,209.20 and 3,149.64 is: 4,342.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.20 : 5,209.20 = 3,149.64 : x
  2. Step 2: Convert to fraction form
    3,778.20/5,209.20 = 3,149.64/x
  3. Step 3: Cross multiply
    3,778.20x = 5,209.20 × 3,149.64
  4. Step 4: Simplify right side
    3,778.20x = 16,407,104.69
  5. Step 5: Solve for x
    x = 16,407,104.69/3,778.20
  6. Step 6: Final answer
    x = 4,342.57

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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.