Home / 3,917.52-5,406.14-2,149.13

Finding the Fourth Proportional to 3,917.52, 5,406.14 and 2,149.13

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Solution

The fourth proportional to 3,917.52, 5,406.14 and 2,149.13 is: 2,965.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.52 : 5,406.14 = 2,149.13 : x
  2. Step 2: Convert to fraction form
    3,917.52/5,406.14 = 2,149.13/x
  3. Step 3: Cross multiply
    3,917.52x = 5,406.14 × 2,149.13
  4. Step 4: Simplify right side
    3,917.52x = 11,618,497.66
  5. Step 5: Solve for x
    x = 11,618,497.66/3,917.52
  6. Step 6: Final answer
    x = 2,965.78

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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.