Home / 5,319.54-7,979.87-2,199.78

Finding the Fourth Proportional to 5,319.54, 7,979.87 and 2,199.78

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Solution

The fourth proportional to 5,319.54, 7,979.87 and 2,199.78 is: 3,299.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,319.54 : 7,979.87 = 2,199.78 : x
  2. Step 2: Convert to fraction form
    5,319.54/7,979.87 = 2,199.78/x
  3. Step 3: Cross multiply
    5,319.54x = 7,979.87 × 2,199.78
  4. Step 4: Simplify right side
    5,319.54x = 17,553,963.93
  5. Step 5: Solve for x
    x = 17,553,963.93/5,319.54
  6. Step 6: Final answer
    x = 3,299.90

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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.