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Finding the Third Proportional to 8,390 and 9,062

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Solution

The third proportional to 8,390 and 9,062 is: 9,787.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390 : 9,062 = 9,062 : x
  2. Step 2: Convert to fraction form
    8,390/9,062 = 9,062/x
  3. Step 3: Cross multiply
    8,390x = 9,062 × 9,062
  4. Step 4: Simplify right side
    8,390x = 82,119,844
  5. Step 5: Solve for x
    x = 82,119,844/8,390
  6. Step 6: Final answer
    x = 9,787.82

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.