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Finding the Fourth Proportional to 7,819.08, 11,728.08 and 3,376.56

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Solution

The fourth proportional to 7,819.08, 11,728.08 and 3,376.56 is: 5,064.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,819.08 : 11,728.08 = 3,376.56 : x
  2. Step 2: Convert to fraction form
    7,819.08/11,728.08 = 3,376.56/x
  3. Step 3: Cross multiply
    7,819.08x = 11,728.08 × 3,376.56
  4. Step 4: Simplify right side
    7,819.08x = 39,600,565.80
  5. Step 5: Solve for x
    x = 39,600,565.80/7,819.08
  6. Step 6: Final answer
    x = 5,064.61

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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.