Home / 3,115.28-4,691.90-2,754.16

Finding the Fourth Proportional to 3,115.28, 4,691.90 and 2,754.16

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Solution

The fourth proportional to 3,115.28, 4,691.90 and 2,754.16 is: 4,148.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.28 : 4,691.90 = 2,754.16 : x
  2. Step 2: Convert to fraction form
    3,115.28/4,691.90 = 2,754.16/x
  3. Step 3: Cross multiply
    3,115.28x = 4,691.90 × 2,754.16
  4. Step 4: Simplify right side
    3,115.28x = 12,922,243.30
  5. Step 5: Solve for x
    x = 12,922,243.30/3,115.28
  6. Step 6: Final answer
    x = 4,148.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.