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Finding the Third Proportional to 4,685 and 9,370

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Solution

The third proportional to 4,685 and 9,370 is: 18,740

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,685 : 9,370 = 9,370 : x
  2. Step 2: Convert to fraction form
    4,685/9,370 = 9,370/x
  3. Step 3: Cross multiply
    4,685x = 9,370 × 9,370
  4. Step 4: Simplify right side
    4,685x = 87,796,900
  5. Step 5: Solve for x
    x = 87,796,900/4,685
  6. Step 6: Final answer
    x = 18,740

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Why These Related Problems?

These problems maintain the same ratio (2) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.