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Finding the Third Proportional to 5,678.44 and 8,716.36

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Solution

The third proportional to 5,678.44 and 8,716.36 is: 13,379.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,678.44 : 8,716.36 = 8,716.36 : x
  2. Step 2: Convert to fraction form
    5,678.44/8,716.36 = 8,716.36/x
  3. Step 3: Cross multiply
    5,678.44x = 8,716.36 × 8,716.36
  4. Step 4: Simplify right side
    5,678.44x = 75,974,920.75
  5. Step 5: Solve for x
    x = 75,974,920.75/5,678.44
  6. Step 6: Final answer
    x = 13,379.55

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.