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Finding the Third Proportional to 3,320 and 5,511

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Solution

The third proportional to 3,320 and 5,511 is: 9,147.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,320 : 5,511 = 5,511 : x
  2. Step 2: Convert to fraction form
    3,320/5,511 = 5,511/x
  3. Step 3: Cross multiply
    3,320x = 5,511 × 5,511
  4. Step 4: Simplify right side
    3,320x = 30,371,121
  5. Step 5: Solve for x
    x = 30,371,121/3,320
  6. Step 6: Final answer
    x = 9,147.93

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Why These Related Problems?

These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.