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Finding the Third Proportional to 3,021 and 3,079.50

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Solution

The third proportional to 3,021 and 3,079.50 is: 3,139.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,021 : 3,079.50 = 3,079.50 : x
  2. Step 2: Convert to fraction form
    3,021/3,079.50 = 3,079.50/x
  3. Step 3: Cross multiply
    3,021x = 3,079.50 × 3,079.50
  4. Step 4: Simplify right side
    3,021x = 9,483,320.25
  5. Step 5: Solve for x
    x = 9,483,320.25/3,021
  6. Step 6: Final answer
    x = 3,139.13

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Why These Related Problems?

These problems maintain the same ratio (1.02) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.