Home / 3,979.26-5,969.16-3,112.02

Finding the Fourth Proportional to 3,979.26, 5,969.16 and 3,112.02

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Solution

The fourth proportional to 3,979.26, 5,969.16 and 3,112.02 is: 4,668.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.26 : 5,969.16 = 3,112.02 : x
  2. Step 2: Convert to fraction form
    3,979.26/5,969.16 = 3,112.02/x
  3. Step 3: Cross multiply
    3,979.26x = 5,969.16 × 3,112.02
  4. Step 4: Simplify right side
    3,979.26x = 18,576,145.30
  5. Step 5: Solve for x
    x = 18,576,145.30/3,979.26
  6. Step 6: Final answer
    x = 4,668.24

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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.