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Finding the Fourth Proportional to 2,249.10, 3,375 and 789.48

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Solution

The fourth proportional to 2,249.10, 3,375 and 789.48 is: 1,184.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,249.10 : 3,375 = 789.48 : x
  2. Step 2: Convert to fraction form
    2,249.10/3,375 = 789.48/x
  3. Step 3: Cross multiply
    2,249.10x = 3,375 × 789.48
  4. Step 4: Simplify right side
    2,249.10x = 2,664,495
  5. Step 5: Solve for x
    x = 2,664,495/2,249.10
  6. Step 6: Final answer
    x = 1,184.69

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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.