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Finding the Third Proportional to 2,020 and 3,221

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Solution

The third proportional to 2,020 and 3,221 is: 5,136.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,020 : 3,221 = 3,221 : x
  2. Step 2: Convert to fraction form
    2,020/3,221 = 3,221/x
  3. Step 3: Cross multiply
    2,020x = 3,221 × 3,221
  4. Step 4: Simplify right side
    2,020x = 10,374,841
  5. Step 5: Solve for x
    x = 10,374,841/2,020
  6. Step 6: Final answer
    x = 5,136.06

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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.