Home / 3,078.22-4,251.95-2,490.97

Finding the Fourth Proportional to 3,078.22, 4,251.95 and 2,490.97

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Solution

The fourth proportional to 3,078.22, 4,251.95 and 2,490.97 is: 3,440.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.22 : 4,251.95 = 2,490.97 : x
  2. Step 2: Convert to fraction form
    3,078.22/4,251.95 = 2,490.97/x
  3. Step 3: Cross multiply
    3,078.22x = 4,251.95 × 2,490.97
  4. Step 4: Simplify right side
    3,078.22x = 10,591,479.89
  5. Step 5: Solve for x
    x = 10,591,479.89/3,078.22
  6. Step 6: Final answer
    x = 3,440.78

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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.