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Finding the Third Proportional to 825.75 and 1,719.81

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Solution

The third proportional to 825.75 and 1,719.81 is: 3,581.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    825.75 : 1,719.81 = 1,719.81 : x
  2. Step 2: Convert to fraction form
    825.75/1,719.81 = 1,719.81/x
  3. Step 3: Cross multiply
    825.75x = 1,719.81 × 1,719.81
  4. Step 4: Simplify right side
    825.75x = 2,957,755.04
  5. Step 5: Solve for x
    x = 2,957,755.04/825.75
  6. Step 6: Final answer
    x = 3,581.90

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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.