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Finding the Third Proportional to 6,544 and 7,128

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Solution

The third proportional to 6,544 and 7,128 is: 7,764.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,544 : 7,128 = 7,128 : x
  2. Step 2: Convert to fraction form
    6,544/7,128 = 7,128/x
  3. Step 3: Cross multiply
    6,544x = 7,128 × 7,128
  4. Step 4: Simplify right side
    6,544x = 50,808,384
  5. Step 5: Solve for x
    x = 50,808,384/6,544
  6. Step 6: Final answer
    x = 7,764.12

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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.