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Finding the Third Proportional to 2,151 and 4,857.75

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Solution

The third proportional to 2,151 and 4,857.75 is: 10,970.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151 : 4,857.75 = 4,857.75 : x
  2. Step 2: Convert to fraction form
    2,151/4,857.75 = 4,857.75/x
  3. Step 3: Cross multiply
    2,151x = 4,857.75 × 4,857.75
  4. Step 4: Simplify right side
    2,151x = 23,597,735.06
  5. Step 5: Solve for x
    x = 23,597,735.06/2,151
  6. Step 6: Final answer
    x = 10,970.59

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Why These Related Problems?

These problems maintain the same ratio (2.26) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.