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Finding the Third Proportional to 5,121 and 10,457

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Solution

The third proportional to 5,121 and 10,457 is: 21,353.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121 : 10,457 = 10,457 : x
  2. Step 2: Convert to fraction form
    5,121/10,457 = 10,457/x
  3. Step 3: Cross multiply
    5,121x = 10,457 × 10,457
  4. Step 4: Simplify right side
    5,121x = 109,348,849
  5. Step 5: Solve for x
    x = 109,348,849/5,121
  6. Step 6: Final answer
    x = 21,353.03

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.