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Finding the Third Proportional to 5,690 and 8,817

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Solution

The third proportional to 5,690 and 8,817 is: 13,662.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,690 : 8,817 = 8,817 : x
  2. Step 2: Convert to fraction form
    5,690/8,817 = 8,817/x
  3. Step 3: Cross multiply
    5,690x = 8,817 × 8,817
  4. Step 4: Simplify right side
    5,690x = 77,739,489
  5. Step 5: Solve for x
    x = 77,739,489/5,690
  6. Step 6: Final answer
    x = 13,662.48

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.