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Finding the Third Proportional to 1,628 and 2,645

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Solution

The third proportional to 1,628 and 2,645 is: 4,297.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628 : 2,645 = 2,645 : x
  2. Step 2: Convert to fraction form
    1,628/2,645 = 2,645/x
  3. Step 3: Cross multiply
    1,628x = 2,645 × 2,645
  4. Step 4: Simplify right side
    1,628x = 6,996,025
  5. Step 5: Solve for x
    x = 6,996,025/1,628
  6. Step 6: Final answer
    x = 4,297.31

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Why These Related Problems?

These problems maintain the same ratio (1.62) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.