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Finding the Third Proportional to 7,065 and 7,686

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Solution

The third proportional to 7,065 and 7,686 is: 8,361.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,065 : 7,686 = 7,686 : x
  2. Step 2: Convert to fraction form
    7,065/7,686 = 7,686/x
  3. Step 3: Cross multiply
    7,065x = 7,686 × 7,686
  4. Step 4: Simplify right side
    7,065x = 59,074,596
  5. Step 5: Solve for x
    x = 59,074,596/7,065
  6. Step 6: Final answer
    x = 8,361.58

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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.