Home / 10,879.38-16,319.42-5,179.10

Finding the Fourth Proportional to 10,879.38, 16,319.42 and 5,179.10

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Solution

The fourth proportional to 10,879.38, 16,319.42 and 5,179.10 is: 7,768.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,879.38 : 16,319.42 = 5,179.10 : x
  2. Step 2: Convert to fraction form
    10,879.38/16,319.42 = 5,179.10/x
  3. Step 3: Cross multiply
    10,879.38x = 16,319.42 × 5,179.10
  4. Step 4: Simplify right side
    10,879.38x = 84,519,882.23
  5. Step 5: Solve for x
    x = 84,519,882.23/10,879.38
  6. Step 6: Final answer
    x = 7,768.82

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1.5x scale

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.