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Finding the Third Proportional to 7,816 and 18,412

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Solution

The third proportional to 7,816 and 18,412 is: 43,372.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,816 : 18,412 = 18,412 : x
  2. Step 2: Convert to fraction form
    7,816/18,412 = 18,412/x
  3. Step 3: Cross multiply
    7,816x = 18,412 × 18,412
  4. Step 4: Simplify right side
    7,816x = 339,001,744
  5. Step 5: Solve for x
    x = 339,001,744/7,816
  6. Step 6: Final answer
    x = 43,372.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.