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Finding the Third Proportional to 3,828 and 5,459

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Solution

The third proportional to 3,828 and 5,459 is: 7,784.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,828 : 5,459 = 5,459 : x
  2. Step 2: Convert to fraction form
    3,828/5,459 = 5,459/x
  3. Step 3: Cross multiply
    3,828x = 5,459 × 5,459
  4. Step 4: Simplify right side
    3,828x = 29,800,681
  5. Step 5: Solve for x
    x = 29,800,681/3,828
  6. Step 6: Final answer
    x = 7,784.92

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.