Home / 3,986.10-5,979.15-2,673.90

Finding the Fourth Proportional to 3,986.10, 5,979.15 and 2,673.90

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Solution

The fourth proportional to 3,986.10, 5,979.15 and 2,673.90 is: 4,010.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.10 : 5,979.15 = 2,673.90 : x
  2. Step 2: Convert to fraction form
    3,986.10/5,979.15 = 2,673.90/x
  3. Step 3: Cross multiply
    3,986.10x = 5,979.15 × 2,673.90
  4. Step 4: Simplify right side
    3,986.10x = 15,987,649.19
  5. Step 5: Solve for x
    x = 15,987,649.19/3,986.10
  6. Step 6: Final answer
    x = 4,010.85

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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.