Home / 2,311.66-3,469.55-1,079.75

Finding the Fourth Proportional to 2,311.66, 3,469.55 and 1,079.75

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Solution

The fourth proportional to 2,311.66, 3,469.55 and 1,079.75 is: 1,620.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.66 : 3,469.55 = 1,079.75 : x
  2. Step 2: Convert to fraction form
    2,311.66/3,469.55 = 1,079.75/x
  3. Step 3: Cross multiply
    2,311.66x = 3,469.55 × 1,079.75
  4. Step 4: Simplify right side
    2,311.66x = 3,746,246.61
  5. Step 5: Solve for x
    x = 3,746,246.61/2,311.66
  6. Step 6: Final answer
    x = 1,620.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.