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Finding the Fourth Proportional to 2,249.80, 3,373.21 and 1,079.77

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Solution

The fourth proportional to 2,249.80, 3,373.21 and 1,079.77 is: 1,618.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,249.80 : 3,373.21 = 1,079.77 : x
  2. Step 2: Convert to fraction form
    2,249.80/3,373.21 = 1,079.77/x
  3. Step 3: Cross multiply
    2,249.80x = 3,373.21 × 1,079.77
  4. Step 4: Simplify right side
    2,249.80x = 3,642,290.96
  5. Step 5: Solve for x
    x = 3,642,290.96/2,249.80
  6. Step 6: Final answer
    x = 1,618.94

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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.