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Finding the Third Proportional to 4,247 and 4,805

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Solution

The third proportional to 4,247 and 4,805 is: 5,436.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,247 : 4,805 = 4,805 : x
  2. Step 2: Convert to fraction form
    4,247/4,805 = 4,805/x
  3. Step 3: Cross multiply
    4,247x = 4,805 × 4,805
  4. Step 4: Simplify right side
    4,247x = 23,088,025
  5. Step 5: Solve for x
    x = 23,088,025/4,247
  6. Step 6: Final answer
    x = 5,436.31

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Why These Related Problems?

These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.