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Finding the Fourth Proportional to 2,874.39, 4,310.79 and 793.89

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Solution

The fourth proportional to 2,874.39, 4,310.79 and 793.89 is: 1,190.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,874.39 : 4,310.79 = 793.89 : x
  2. Step 2: Convert to fraction form
    2,874.39/4,310.79 = 793.89/x
  3. Step 3: Cross multiply
    2,874.39x = 4,310.79 × 793.89
  4. Step 4: Simplify right side
    2,874.39x = 3,422,293.07
  5. Step 5: Solve for x
    x = 3,422,293.07/2,874.39
  6. Step 6: Final answer
    x = 1,190.62

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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.