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Finding the Third Proportional to 6,128 and 7,505

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Solution

The third proportional to 6,128 and 7,505 is: 9,191.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,128 : 7,505 = 7,505 : x
  2. Step 2: Convert to fraction form
    6,128/7,505 = 7,505/x
  3. Step 3: Cross multiply
    6,128x = 7,505 × 7,505
  4. Step 4: Simplify right side
    6,128x = 56,325,025
  5. Step 5: Solve for x
    x = 56,325,025/6,128
  6. Step 6: Final answer
    x = 9,191.42

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Why These Related Problems?

These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.