Home / 3,115.85-4,305.32-2,491.52

Finding the Fourth Proportional to 3,115.85, 4,305.32 and 2,491.52

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Solution

The fourth proportional to 3,115.85, 4,305.32 and 2,491.52 is: 3,442.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.85 : 4,305.32 = 2,491.52 : x
  2. Step 2: Convert to fraction form
    3,115.85/4,305.32 = 2,491.52/x
  3. Step 3: Cross multiply
    3,115.85x = 4,305.32 × 2,491.52
  4. Step 4: Simplify right side
    3,115.85x = 10,726,756.90
  5. Step 5: Solve for x
    x = 10,726,756.90/3,115.85
  6. Step 6: Final answer
    x = 3,442.65

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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.