Home / 2,739.12-4,104.78-2,119.92

Finding the Fourth Proportional to 2,739.12, 4,104.78 and 2,119.92

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Solution

The fourth proportional to 2,739.12, 4,104.78 and 2,119.92 is: 3,176.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,739.12 : 4,104.78 = 2,119.92 : x
  2. Step 2: Convert to fraction form
    2,739.12/4,104.78 = 2,119.92/x
  3. Step 3: Cross multiply
    2,739.12x = 4,104.78 × 2,119.92
  4. Step 4: Simplify right side
    2,739.12x = 8,701,804.96
  5. Step 5: Solve for x
    x = 8,701,804.96/2,739.12
  6. Step 6: Final answer
    x = 3,176.87

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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.