Home / 3,454.11-5,176.85-2,720.79

Finding the Fourth Proportional to 3,454.11, 5,176.85 and 2,720.79

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Solution

The fourth proportional to 3,454.11, 5,176.85 and 2,720.79 is: 4,077.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,454.11 : 5,176.85 = 2,720.79 : x
  2. Step 2: Convert to fraction form
    3,454.11/5,176.85 = 2,720.79/x
  3. Step 3: Cross multiply
    3,454.11x = 5,176.85 × 2,720.79
  4. Step 4: Simplify right side
    3,454.11x = 14,085,108.11
  5. Step 5: Solve for x
    x = 14,085,108.11/3,454.11
  6. Step 6: Final answer
    x = 4,077.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.