Home / 1,997.25-2,755.22-1,408.11

Finding the Fourth Proportional to 1,997.25, 2,755.22 and 1,408.11

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Solution

The fourth proportional to 1,997.25, 2,755.22 and 1,408.11 is: 1,942.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,997.25 : 2,755.22 = 1,408.11 : x
  2. Step 2: Convert to fraction form
    1,997.25/2,755.22 = 1,408.11/x
  3. Step 3: Cross multiply
    1,997.25x = 2,755.22 × 1,408.11
  4. Step 4: Simplify right side
    1,997.25x = 3,879,645.79
  5. Step 5: Solve for x
    x = 3,879,645.79/1,997.25
  6. Step 6: Final answer
    x = 1,942.49

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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.