Home / 2,221.14-3,331.02-759.95

Finding the Fourth Proportional to 2,221.14, 3,331.02 and 759.95

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Solution

The fourth proportional to 2,221.14, 3,331.02 and 759.95 is: 1,139.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.14 : 3,331.02 = 759.95 : x
  2. Step 2: Convert to fraction form
    2,221.14/3,331.02 = 759.95/x
  3. Step 3: Cross multiply
    2,221.14x = 3,331.02 × 759.95
  4. Step 4: Simplify right side
    2,221.14x = 2,531,408.65
  5. Step 5: Solve for x
    x = 2,531,408.65/2,221.14
  6. Step 6: Final answer
    x = 1,139.69

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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.