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Finding the Third Proportional to 1,505 and 3,925

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Solution

The third proportional to 1,505 and 3,925 is: 10,236.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,505 : 3,925 = 3,925 : x
  2. Step 2: Convert to fraction form
    1,505/3,925 = 3,925/x
  3. Step 3: Cross multiply
    1,505x = 3,925 × 3,925
  4. Step 4: Simplify right side
    1,505x = 15,405,625
  5. Step 5: Solve for x
    x = 15,405,625/1,505
  6. Step 6: Final answer
    x = 10,236.30

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Why These Related Problems?

These problems maintain the same ratio (2.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.