Home / 3,115.28-4,295.20-2,616.84

Finding the Fourth Proportional to 3,115.28, 4,295.20 and 2,616.84

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Solution

The fourth proportional to 3,115.28, 4,295.20 and 2,616.84 is: 3,607.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.28 : 4,295.20 = 2,616.84 : x
  2. Step 2: Convert to fraction form
    3,115.28/4,295.20 = 2,616.84/x
  3. Step 3: Cross multiply
    3,115.28x = 4,295.20 × 2,616.84
  4. Step 4: Simplify right side
    3,115.28x = 11,239,851.17
  5. Step 5: Solve for x
    x = 11,239,851.17/3,115.28
  6. Step 6: Final answer
    x = 3,607.97

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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.