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Finding the Fourth Proportional to 7,879.88, 11,819.10 and 4,590.92

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Solution

The fourth proportional to 7,879.88, 11,819.10 and 4,590.92 is: 6,885.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,879.88 : 11,819.10 = 4,590.92 : x
  2. Step 2: Convert to fraction form
    7,879.88/11,819.10 = 4,590.92/x
  3. Step 3: Cross multiply
    7,879.88x = 11,819.10 × 4,590.92
  4. Step 4: Simplify right side
    7,879.88x = 54,260,542.57
  5. Step 5: Solve for x
    x = 54,260,542.57/7,879.88
  6. Step 6: Final answer
    x = 6,885.96

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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.