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Finding the Fourth Proportional to 7,846.78, 11,769.62 and 3,680.96

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Solution

The fourth proportional to 7,846.78, 11,769.62 and 3,680.96 is: 5,521.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,846.78 : 11,769.62 = 3,680.96 : x
  2. Step 2: Convert to fraction form
    7,846.78/11,769.62 = 3,680.96/x
  3. Step 3: Cross multiply
    7,846.78x = 11,769.62 × 3,680.96
  4. Step 4: Simplify right side
    7,846.78x = 43,323,500.44
  5. Step 5: Solve for x
    x = 43,323,500.44/7,846.78
  6. Step 6: Final answer
    x = 5,521.18

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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.