Home / 2,218.79-3,331.22-1,394.61

Finding the Fourth Proportional to 2,218.79, 3,331.22 and 1,394.61

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Solution

The fourth proportional to 2,218.79, 3,331.22 and 1,394.61 is: 2,093.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.79 : 3,331.22 = 1,394.61 : x
  2. Step 2: Convert to fraction form
    2,218.79/3,331.22 = 1,394.61/x
  3. Step 3: Cross multiply
    2,218.79x = 3,331.22 × 1,394.61
  4. Step 4: Simplify right side
    2,218.79x = 4,645,745.75
  5. Step 5: Solve for x
    x = 4,645,745.75/2,218.79
  6. Step 6: Final answer
    x = 2,093.82

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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.