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Finding the Third Proportional to 3,955 and 9,157

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Solution

The third proportional to 3,955 and 9,157 is: 21,201.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,955 : 9,157 = 9,157 : x
  2. Step 2: Convert to fraction form
    3,955/9,157 = 9,157/x
  3. Step 3: Cross multiply
    3,955x = 9,157 × 9,157
  4. Step 4: Simplify right side
    3,955x = 83,850,649
  5. Step 5: Solve for x
    x = 83,850,649/3,955
  6. Step 6: Final answer
    x = 21,201.18

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Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.