Home / 3,917.76-5,406.66-2,149.44

Finding the Fourth Proportional to 3,917.76, 5,406.66 and 2,149.44

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Solution

The fourth proportional to 3,917.76, 5,406.66 and 2,149.44 is: 2,966.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.76 : 5,406.66 = 2,149.44 : x
  2. Step 2: Convert to fraction form
    3,917.76/5,406.66 = 2,149.44/x
  3. Step 3: Cross multiply
    3,917.76x = 5,406.66 × 2,149.44
  4. Step 4: Simplify right side
    3,917.76x = 11,621,291.27
  5. Step 5: Solve for x
    x = 11,621,291.27/3,917.76
  6. Step 6: Final answer
    x = 2,966.31

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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.