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Finding the Third Proportional to 878.86 and 1,362.60

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Solution

The third proportional to 878.86 and 1,362.60 is: 2,112.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    878.86 : 1,362.60 = 1,362.60 : x
  2. Step 2: Convert to fraction form
    878.86/1,362.60 = 1,362.60/x
  3. Step 3: Cross multiply
    878.86x = 1,362.60 × 1,362.60
  4. Step 4: Simplify right side
    878.86x = 1,856,688.34
  5. Step 5: Solve for x
    x = 1,856,688.34/878.86
  6. Step 6: Final answer
    x = 2,112.61

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.