Home / 3,917.41-5,406.15-2,149.15

Finding the Fourth Proportional to 3,917.41, 5,406.15 and 2,149.15

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Solution

The fourth proportional to 3,917.41, 5,406.15 and 2,149.15 is: 2,965.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.41 : 5,406.15 = 2,149.15 : x
  2. Step 2: Convert to fraction form
    3,917.41/5,406.15 = 2,149.15/x
  3. Step 3: Cross multiply
    3,917.41x = 5,406.15 × 2,149.15
  4. Step 4: Simplify right side
    3,917.41x = 11,618,627.27
  5. Step 5: Solve for x
    x = 11,618,627.27/3,917.41
  6. Step 6: Final answer
    x = 2,965.90

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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.