Home / 3,079.20-4,249.12-1,752.72

Finding the Fourth Proportional to 3,079.20, 4,249.12 and 1,752.72

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Solution

The fourth proportional to 3,079.20, 4,249.12 and 1,752.72 is: 2,418.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,079.20 : 4,249.12 = 1,752.72 : x
  2. Step 2: Convert to fraction form
    3,079.20/4,249.12 = 1,752.72/x
  3. Step 3: Cross multiply
    3,079.20x = 4,249.12 × 1,752.72
  4. Step 4: Simplify right side
    3,079.20x = 7,447,517.61
  5. Step 5: Solve for x
    x = 7,447,517.61/3,079.20
  6. Step 6: Final answer
    x = 2,418.65

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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.