Home / 2,218.57-3,329.91-1,123.70

Finding the Fourth Proportional to 2,218.57, 3,329.91 and 1,123.70

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Solution

The fourth proportional to 2,218.57, 3,329.91 and 1,123.70 is: 1,686.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.57 : 3,329.91 = 1,123.70 : x
  2. Step 2: Convert to fraction form
    2,218.57/3,329.91 = 1,123.70/x
  3. Step 3: Cross multiply
    2,218.57x = 3,329.91 × 1,123.70
  4. Step 4: Simplify right side
    2,218.57x = 3,741,819.87
  5. Step 5: Solve for x
    x = 3,741,819.87/2,218.57
  6. Step 6: Final answer
    x = 1,686.59

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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.