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Finding the Third Proportional to 3,311 and 5,270.50

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Solution

The third proportional to 3,311 and 5,270.50 is: 8,389.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311 : 5,270.50 = 5,270.50 : x
  2. Step 2: Convert to fraction form
    3,311/5,270.50 = 5,270.50/x
  3. Step 3: Cross multiply
    3,311x = 5,270.50 × 5,270.50
  4. Step 4: Simplify right side
    3,311x = 27,778,170.25
  5. Step 5: Solve for x
    x = 27,778,170.25/3,311
  6. Step 6: Final answer
    x = 8,389.66

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.