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Finding the Fourth Proportional to 2,739.06, 4,108.82 and 791.42

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Solution

The fourth proportional to 2,739.06, 4,108.82 and 791.42 is: 1,187.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,739.06 : 4,108.82 = 791.42 : x
  2. Step 2: Convert to fraction form
    2,739.06/4,108.82 = 791.42/x
  3. Step 3: Cross multiply
    2,739.06x = 4,108.82 × 791.42
  4. Step 4: Simplify right side
    2,739.06x = 3,251,777.82
  5. Step 5: Solve for x
    x = 3,251,777.82/2,739.06
  6. Step 6: Final answer
    x = 1,187.19

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1.5x scale

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.