Home / 2,311.68-3,469.86-1,339.68

Finding the Fourth Proportional to 2,311.68, 3,469.86 and 1,339.68

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Solution

The fourth proportional to 2,311.68, 3,469.86 and 1,339.68 is: 2,010.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.68 : 3,469.86 = 1,339.68 : x
  2. Step 2: Convert to fraction form
    2,311.68/3,469.86 = 1,339.68/x
  3. Step 3: Cross multiply
    2,311.68x = 3,469.86 × 1,339.68
  4. Step 4: Simplify right side
    2,311.68x = 4,648,502.04
  5. Step 5: Solve for x
    x = 4,648,502.04/2,311.68
  6. Step 6: Final answer
    x = 2,010.88

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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.