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Finding the Third Proportional to 7,884 and 19,410

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Solution

The third proportional to 7,884 and 19,410 is: 47,786.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,884 : 19,410 = 19,410 : x
  2. Step 2: Convert to fraction form
    7,884/19,410 = 19,410/x
  3. Step 3: Cross multiply
    7,884x = 19,410 × 19,410
  4. Step 4: Simplify right side
    7,884x = 376,748,100
  5. Step 5: Solve for x
    x = 376,748,100/7,884
  6. Step 6: Final answer
    x = 47,786.42

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Why These Related Problems?

These problems maintain the same ratio (2.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.