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Finding the Third Proportional to 1,355 and 2,737

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Solution

The third proportional to 1,355 and 2,737 is: 5,528.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355 : 2,737 = 2,737 : x
  2. Step 2: Convert to fraction form
    1,355/2,737 = 2,737/x
  3. Step 3: Cross multiply
    1,355x = 2,737 × 2,737
  4. Step 4: Simplify right side
    1,355x = 7,491,169
  5. Step 5: Solve for x
    x = 7,491,169/1,355
  6. Step 6: Final answer
    x = 5,528.54

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Why These Related Problems?

These problems maintain the same ratio (2.02) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.