Home / 3,078.97-4,246.29-2,001.78

Finding the Fourth Proportional to 3,078.97, 4,246.29 and 2,001.78

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Solution

The fourth proportional to 3,078.97, 4,246.29 and 2,001.78 is: 2,760.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.97 : 4,246.29 = 2,001.78 : x
  2. Step 2: Convert to fraction form
    3,078.97/4,246.29 = 2,001.78/x
  3. Step 3: Cross multiply
    3,078.97x = 4,246.29 × 2,001.78
  4. Step 4: Simplify right side
    3,078.97x = 8,500,138.40
  5. Step 5: Solve for x
    x = 8,500,138.40/3,078.97
  6. Step 6: Final answer
    x = 2,760.71

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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.