Home / 3,917.91-5,406.54-2,149.48

Finding the Fourth Proportional to 3,917.91, 5,406.54 and 2,149.48

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Solution

The fourth proportional to 3,917.91, 5,406.54 and 2,149.48 is: 2,966.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.91 : 5,406.54 = 2,149.48 : x
  2. Step 2: Convert to fraction form
    3,917.91/5,406.54 = 2,149.48/x
  3. Step 3: Cross multiply
    3,917.91x = 5,406.54 × 2,149.48
  4. Step 4: Simplify right side
    3,917.91x = 11,621,211.82
  5. Step 5: Solve for x
    x = 11,621,211.82/3,917.91
  6. Step 6: Final answer
    x = 2,966.18

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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.