Home / 3,249.20-4,480.71-2,979.38

Finding the Fourth Proportional to 3,249.20, 4,480.71 and 2,979.38

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Solution

The fourth proportional to 3,249.20, 4,480.71 and 2,979.38 is: 4,108.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,249.20 : 4,480.71 = 2,979.38 : x
  2. Step 2: Convert to fraction form
    3,249.20/4,480.71 = 2,979.38/x
  3. Step 3: Cross multiply
    3,249.20x = 4,480.71 × 2,979.38
  4. Step 4: Simplify right side
    3,249.20x = 13,349,737.76
  5. Step 5: Solve for x
    x = 13,349,737.76/3,249.20
  6. Step 6: Final answer
    x = 4,108.62

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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.