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Finding the Third Proportional to 4,135 and 9,143

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Solution

The third proportional to 4,135 and 9,143 is: 20,216.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,135 : 9,143 = 9,143 : x
  2. Step 2: Convert to fraction form
    4,135/9,143 = 9,143/x
  3. Step 3: Cross multiply
    4,135x = 9,143 × 9,143
  4. Step 4: Simplify right side
    4,135x = 83,594,449
  5. Step 5: Solve for x
    x = 83,594,449/4,135
  6. Step 6: Final answer
    x = 20,216.31

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.