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Finding the Third Proportional to 5,424 and 9,728

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Solution

The third proportional to 5,424 and 9,728 is: 17,447.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,424 : 9,728 = 9,728 : x
  2. Step 2: Convert to fraction form
    5,424/9,728 = 9,728/x
  3. Step 3: Cross multiply
    5,424x = 9,728 × 9,728
  4. Step 4: Simplify right side
    5,424x = 94,633,984
  5. Step 5: Solve for x
    x = 94,633,984/5,424
  6. Step 6: Final answer
    x = 17,447.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.79) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.