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Finding the Third Proportional to 3,968 and 9,167.50

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Solution

The third proportional to 3,968 and 9,167.50 is: 21,180.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,968 : 9,167.50 = 9,167.50 : x
  2. Step 2: Convert to fraction form
    3,968/9,167.50 = 9,167.50/x
  3. Step 3: Cross multiply
    3,968x = 9,167.50 × 9,167.50
  4. Step 4: Simplify right side
    3,968x = 84,043,056.25
  5. Step 5: Solve for x
    x = 84,043,056.25/3,968
  6. Step 6: Final answer
    x = 21,180.21

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.