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Finding the Third Proportional to 8,490 and 11,667

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Solution

The third proportional to 8,490 and 11,667 is: 16,032.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,490 : 11,667 = 11,667 : x
  2. Step 2: Convert to fraction form
    8,490/11,667 = 11,667/x
  3. Step 3: Cross multiply
    8,490x = 11,667 × 11,667
  4. Step 4: Simplify right side
    8,490x = 136,118,889
  5. Step 5: Solve for x
    x = 136,118,889/8,490
  6. Step 6: Final answer
    x = 16,032.85

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.