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Finding the Third Proportional to 4,705 and 9,805

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Solution

The third proportional to 4,705 and 9,805 is: 20,433.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,705 : 9,805 = 9,805 : x
  2. Step 2: Convert to fraction form
    4,705/9,805 = 9,805/x
  3. Step 3: Cross multiply
    4,705x = 9,805 × 9,805
  4. Step 4: Simplify right side
    4,705x = 96,138,025
  5. Step 5: Solve for x
    x = 96,138,025/4,705
  6. Step 6: Final answer
    x = 20,433.16

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.