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Finding the Fourth Proportional to 2,739.37, 4,109.28 and 791.59

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Solution

The fourth proportional to 2,739.37, 4,109.28 and 791.59 is: 1,187.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,739.37 : 4,109.28 = 791.59 : x
  2. Step 2: Convert to fraction form
    2,739.37/4,109.28 = 791.59/x
  3. Step 3: Cross multiply
    2,739.37x = 4,109.28 × 791.59
  4. Step 4: Simplify right side
    2,739.37x = 3,252,864.96
  5. Step 5: Solve for x
    x = 3,252,864.96/2,739.37
  6. Step 6: Final answer
    x = 1,187.45

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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.