Home / 3,979.04-5,969.52-2,811.33

Finding the Fourth Proportional to 3,979.04, 5,969.52 and 2,811.33

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Solution

The fourth proportional to 3,979.04, 5,969.52 and 2,811.33 is: 4,217.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.04 : 5,969.52 = 2,811.33 : x
  2. Step 2: Convert to fraction form
    3,979.04/5,969.52 = 2,811.33/x
  3. Step 3: Cross multiply
    3,979.04x = 5,969.52 × 2,811.33
  4. Step 4: Simplify right side
    3,979.04x = 16,782,290.66
  5. Step 5: Solve for x
    x = 16,782,290.66/3,979.04
  6. Step 6: Final answer
    x = 4,217.68

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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.