Home / 3,918.38-5,408.51-2,240.73

Finding the Fourth Proportional to 3,918.38, 5,408.51 and 2,240.73

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Solution

The fourth proportional to 3,918.38, 5,408.51 and 2,240.73 is: 3,092.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.38 : 5,408.51 = 2,240.73 : x
  2. Step 2: Convert to fraction form
    3,918.38/5,408.51 = 2,240.73/x
  3. Step 3: Cross multiply
    3,918.38x = 5,408.51 × 2,240.73
  4. Step 4: Simplify right side
    3,918.38x = 12,118,999.41
  5. Step 5: Solve for x
    x = 12,118,999.41/3,918.38
  6. Step 6: Final answer
    x = 3,092.86

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1.5x scale

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.