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Finding the Third Proportional to 2,812 and 6,143

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Solution

The third proportional to 2,812 and 6,143 is: 13,419.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812 : 6,143 = 6,143 : x
  2. Step 2: Convert to fraction form
    2,812/6,143 = 6,143/x
  3. Step 3: Cross multiply
    2,812x = 6,143 × 6,143
  4. Step 4: Simplify right side
    2,812x = 37,736,449
  5. Step 5: Solve for x
    x = 37,736,449/2,812
  6. Step 6: Final answer
    x = 13,419.79

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.