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Finding the Third Proportional to 3,153 and 6,912

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Solution

The third proportional to 3,153 and 6,912 is: 15,152.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,153 : 6,912 = 6,912 : x
  2. Step 2: Convert to fraction form
    3,153/6,912 = 6,912/x
  3. Step 3: Cross multiply
    3,153x = 6,912 × 6,912
  4. Step 4: Simplify right side
    3,153x = 47,775,744
  5. Step 5: Solve for x
    x = 47,775,744/3,153
  6. Step 6: Final answer
    x = 15,152.47

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.