Home / 2,740.10-4,108.77-791.78

Finding the Fourth Proportional to 2,740.10, 4,108.77 and 791.78

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Solution

The fourth proportional to 2,740.10, 4,108.77 and 791.78 is: 1,187.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,740.10 : 4,108.77 = 791.78 : x
  2. Step 2: Convert to fraction form
    2,740.10/4,108.77 = 791.78/x
  3. Step 3: Cross multiply
    2,740.10x = 4,108.77 × 791.78
  4. Step 4: Simplify right side
    2,740.10x = 3,253,241.91
  5. Step 5: Solve for x
    x = 3,253,241.91/2,740.10
  6. Step 6: Final answer
    x = 1,187.27

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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.