Home / 3,917.66-5,406.46-2,149.44

Finding the Fourth Proportional to 3,917.66, 5,406.46 and 2,149.44

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Solution

The fourth proportional to 3,917.66, 5,406.46 and 2,149.44 is: 2,966.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.66 : 5,406.46 = 2,149.44 : x
  2. Step 2: Convert to fraction form
    3,917.66/5,406.46 = 2,149.44/x
  3. Step 3: Cross multiply
    3,917.66x = 5,406.46 × 2,149.44
  4. Step 4: Simplify right side
    3,917.66x = 11,620,861.38
  5. Step 5: Solve for x
    x = 11,620,861.38/3,917.66
  6. Step 6: Final answer
    x = 2,966.28

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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.