Home / 2,189.85-3,022.11-1,293.87

Finding the Fourth Proportional to 2,189.85, 3,022.11 and 1,293.87

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Solution

The fourth proportional to 2,189.85, 3,022.11 and 1,293.87 is: 1,785.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.85 : 3,022.11 = 1,293.87 : x
  2. Step 2: Convert to fraction form
    2,189.85/3,022.11 = 1,293.87/x
  3. Step 3: Cross multiply
    2,189.85x = 3,022.11 × 1,293.87
  4. Step 4: Simplify right side
    2,189.85x = 3,910,217.47
  5. Step 5: Solve for x
    x = 3,910,217.47/2,189.85
  6. Step 6: Final answer
    x = 1,785.61

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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.