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Finding the Third Proportional to 5,855 and 10,486

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Solution

The third proportional to 5,855 and 10,486 is: 18,779.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,855 : 10,486 = 10,486 : x
  2. Step 2: Convert to fraction form
    5,855/10,486 = 10,486/x
  3. Step 3: Cross multiply
    5,855x = 10,486 × 10,486
  4. Step 4: Simplify right side
    5,855x = 109,956,196
  5. Step 5: Solve for x
    x = 109,956,196/5,855
  6. Step 6: Final answer
    x = 18,779.88

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Why These Related Problems?

These problems maintain the same ratio (1.79) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.