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Finding the Third Proportional to 4,798.31 and 10,121.81

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Solution

The third proportional to 4,798.31 and 10,121.81 is: 21,351.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,798.31 : 10,121.81 = 10,121.81 : x
  2. Step 2: Convert to fraction form
    4,798.31/10,121.81 = 10,121.81/x
  3. Step 3: Cross multiply
    4,798.31x = 10,121.81 × 10,121.81
  4. Step 4: Simplify right side
    4,798.31x = 102,451,088.29
  5. Step 5: Solve for x
    x = 102,451,088.29/4,798.31
  6. Step 6: Final answer
    x = 21,351.48

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.