Home / 3,979.22-5,969.84-2,811.52

Finding the Fourth Proportional to 3,979.22, 5,969.84 and 2,811.52

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Solution

The fourth proportional to 3,979.22, 5,969.84 and 2,811.52 is: 4,217.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.22 : 5,969.84 = 2,811.52 : x
  2. Step 2: Convert to fraction form
    3,979.22/5,969.84 = 2,811.52/x
  3. Step 3: Cross multiply
    3,979.22x = 5,969.84 × 2,811.52
  4. Step 4: Simplify right side
    3,979.22x = 16,784,324.56
  5. Step 5: Solve for x
    x = 16,784,324.56/3,979.22
  6. Step 6: Final answer
    x = 4,217.99

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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.