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Finding the Fourth Proportional to 8,850.72, 12,213.60 and 4,872

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Solution

The fourth proportional to 8,850.72, 12,213.60 and 4,872 is: 6,723.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,850.72 : 12,213.60 = 4,872 : x
  2. Step 2: Convert to fraction form
    8,850.72/12,213.60 = 4,872/x
  3. Step 3: Cross multiply
    8,850.72x = 12,213.60 × 4,872
  4. Step 4: Simplify right side
    8,850.72x = 59,504,659.20
  5. Step 5: Solve for x
    x = 59,504,659.20/8,850.72
  6. Step 6: Final answer
    x = 6,723.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.