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Finding the Third Proportional to 2,505 and 2,729

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Solution

The third proportional to 2,505 and 2,729 is: 2,973.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,505 : 2,729 = 2,729 : x
  2. Step 2: Convert to fraction form
    2,505/2,729 = 2,729/x
  3. Step 3: Cross multiply
    2,505x = 2,729 × 2,729
  4. Step 4: Simplify right side
    2,505x = 7,447,441
  5. Step 5: Solve for x
    x = 7,447,441/2,505
  6. Step 6: Final answer
    x = 2,973.03

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.