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Finding the Third Proportional to 879.33 and 1,392.40

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Solution

The third proportional to 879.33 and 1,392.40 is: 2,204.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    879.33 : 1,392.40 = 1,392.40 : x
  2. Step 2: Convert to fraction form
    879.33/1,392.40 = 1,392.40/x
  3. Step 3: Cross multiply
    879.33x = 1,392.40 × 1,392.40
  4. Step 4: Simplify right side
    879.33x = 1,938,773.41
  5. Step 5: Solve for x
    x = 1,938,773.41/879.33
  6. Step 6: Final answer
    x = 2,204.83

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.