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Finding the Fourth Proportional to 2,879.31, 3,950.10 and 2,739.87

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Solution

The fourth proportional to 2,879.31, 3,950.10 and 2,739.87 is: 3,758.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.31 : 3,950.10 = 2,739.87 : x
  2. Step 2: Convert to fraction form
    2,879.31/3,950.10 = 2,739.87/x
  3. Step 3: Cross multiply
    2,879.31x = 3,950.10 × 2,739.87
  4. Step 4: Simplify right side
    2,879.31x = 10,822,760.49
  5. Step 5: Solve for x
    x = 10,822,760.49/2,879.31
  6. Step 6: Final answer
    x = 3,758.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.