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Finding the Third Proportional to 5,855 and 8,978

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Solution

The third proportional to 5,855 and 8,978 is: 13,766.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,855 : 8,978 = 8,978 : x
  2. Step 2: Convert to fraction form
    5,855/8,978 = 8,978/x
  3. Step 3: Cross multiply
    5,855x = 8,978 × 8,978
  4. Step 4: Simplify right side
    5,855x = 80,604,484
  5. Step 5: Solve for x
    x = 80,604,484/5,855
  6. Step 6: Final answer
    x = 13,766.78

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