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Finding the Third Proportional to 4,785 and 10,257

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Solution

The third proportional to 4,785 and 10,257 is: 21,986.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,785 : 10,257 = 10,257 : x
  2. Step 2: Convert to fraction form
    4,785/10,257 = 10,257/x
  3. Step 3: Cross multiply
    4,785x = 10,257 × 10,257
  4. Step 4: Simplify right side
    4,785x = 105,206,049
  5. Step 5: Solve for x
    x = 105,206,049/4,785
  6. Step 6: Final answer
    x = 21,986.64

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.