Home / 1,249.31-1,861.49-1,193.42

Finding the Fourth Proportional to 1,249.31, 1,861.49 and 1,193.42

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Solution

The fourth proportional to 1,249.31, 1,861.49 and 1,193.42 is: 1,778.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249.31 : 1,861.49 = 1,193.42 : x
  2. Step 2: Convert to fraction form
    1,249.31/1,861.49 = 1,193.42/x
  3. Step 3: Cross multiply
    1,249.31x = 1,861.49 × 1,193.42
  4. Step 4: Simplify right side
    1,249.31x = 2,221,524.12
  5. Step 5: Solve for x
    x = 2,221,524.12/1,249.31
  6. Step 6: Final answer
    x = 1,778.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.