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Finding the Third Proportional to 7,121 and 10,477

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Solution

The third proportional to 7,121 and 10,477 is: 15,414.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,121 : 10,477 = 10,477 : x
  2. Step 2: Convert to fraction form
    7,121/10,477 = 10,477/x
  3. Step 3: Cross multiply
    7,121x = 10,477 × 10,477
  4. Step 4: Simplify right side
    7,121x = 109,767,529
  5. Step 5: Solve for x
    x = 109,767,529/7,121
  6. Step 6: Final answer
    x = 15,414.62

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.