Home / 3,986.54-5,979.16-2,505.86

Finding the Fourth Proportional to 3,986.54, 5,979.16 and 2,505.86

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Solution

The fourth proportional to 3,986.54, 5,979.16 and 2,505.86 is: 3,758.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.54 : 5,979.16 = 2,505.86 : x
  2. Step 2: Convert to fraction form
    3,986.54/5,979.16 = 2,505.86/x
  3. Step 3: Cross multiply
    3,986.54x = 5,979.16 × 2,505.86
  4. Step 4: Simplify right side
    3,986.54x = 14,982,937.88
  5. Step 5: Solve for x
    x = 14,982,937.88/3,986.54
  6. Step 6: Final answer
    x = 3,758.38

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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.