Home / 3,540.15-5,311.04-1,979.38

Finding the Fourth Proportional to 3,540.15, 5,311.04 and 1,979.38

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Solution

The fourth proportional to 3,540.15, 5,311.04 and 1,979.38 is: 2,969.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,540.15 : 5,311.04 = 1,979.38 : x
  2. Step 2: Convert to fraction form
    3,540.15/5,311.04 = 1,979.38/x
  3. Step 3: Cross multiply
    3,540.15x = 5,311.04 × 1,979.38
  4. Step 4: Simplify right side
    3,540.15x = 10,512,563.10
  5. Step 5: Solve for x
    x = 10,512,563.10/3,540.15
  6. Step 6: Final answer
    x = 2,969.52

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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.