Home / 3,917.71-5,406.48-2,149.39

Finding the Fourth Proportional to 3,917.71, 5,406.48 and 2,149.39

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Solution

The fourth proportional to 3,917.71, 5,406.48 and 2,149.39 is: 2,966.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.71 : 5,406.48 = 2,149.39 : x
  2. Step 2: Convert to fraction form
    3,917.71/5,406.48 = 2,149.39/x
  3. Step 3: Cross multiply
    3,917.71x = 5,406.48 × 2,149.39
  4. Step 4: Simplify right side
    3,917.71x = 11,620,634.05
  5. Step 5: Solve for x
    x = 11,620,634.05/3,917.71
  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.