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Finding the Third Proportional to 8,430 and 9,186

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Solution

The third proportional to 8,430 and 9,186 is: 10,009.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,430 : 9,186 = 9,186 : x
  2. Step 2: Convert to fraction form
    8,430/9,186 = 9,186/x
  3. Step 3: Cross multiply
    8,430x = 9,186 × 9,186
  4. Step 4: Simplify right side
    8,430x = 84,382,596
  5. Step 5: Solve for x
    x = 84,382,596/8,430
  6. Step 6: Final answer
    x = 10,009.80

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.