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Finding the Third Proportional to 868.85 and 1,798.45

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Solution

The third proportional to 868.85 and 1,798.45 is: 3,722.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    868.85 : 1,798.45 = 1,798.45 : x
  2. Step 2: Convert to fraction form
    868.85/1,798.45 = 1,798.45/x
  3. Step 3: Cross multiply
    868.85x = 1,798.45 × 1,798.45
  4. Step 4: Simplify right side
    868.85x = 3,234,433.64
  5. Step 5: Solve for x
    x = 3,234,433.64/868.85
  6. Step 6: Final answer
    x = 3,722.65

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.