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Finding the Third Proportional to 3,112 and 4,355

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Solution

The third proportional to 3,112 and 4,355 is: 6,094.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112 : 4,355 = 4,355 : x
  2. Step 2: Convert to fraction form
    3,112/4,355 = 4,355/x
  3. Step 3: Cross multiply
    3,112x = 4,355 × 4,355
  4. Step 4: Simplify right side
    3,112x = 18,966,025
  5. Step 5: Solve for x
    x = 18,966,025/3,112
  6. Step 6: Final answer
    x = 6,094.48

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.