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Finding the Fourth Proportional to 9,879.38, 14,819.10 and 2,859.98

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Solution

The fourth proportional to 9,879.38, 14,819.10 and 2,859.98 is: 4,289.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,879.38 : 14,819.10 = 2,859.98 : x
  2. Step 2: Convert to fraction form
    9,879.38/14,819.10 = 2,859.98/x
  3. Step 3: Cross multiply
    9,879.38x = 14,819.10 × 2,859.98
  4. Step 4: Simplify right side
    9,879.38x = 42,382,329.62
  5. Step 5: Solve for x
    x = 42,382,329.62/9,879.38
  6. Step 6: Final answer
    x = 4,289.98

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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.