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Finding the Third Proportional to 5,812 and 8,990

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Solution

The third proportional to 5,812 and 8,990 is: 13,905.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,812 : 8,990 = 8,990 : x
  2. Step 2: Convert to fraction form
    5,812/8,990 = 8,990/x
  3. Step 3: Cross multiply
    5,812x = 8,990 × 8,990
  4. Step 4: Simplify right side
    5,812x = 80,820,100
  5. Step 5: Solve for x
    x = 80,820,100/5,812
  6. Step 6: Final answer
    x = 13,905.73

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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.