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Finding the Third Proportional to 4,812 and 7,716

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Solution

The third proportional to 4,812 and 7,716 is: 12,372.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,812 : 7,716 = 7,716 : x
  2. Step 2: Convert to fraction form
    4,812/7,716 = 7,716/x
  3. Step 3: Cross multiply
    4,812x = 7,716 × 7,716
  4. Step 4: Simplify right side
    4,812x = 59,536,656
  5. Step 5: Solve for x
    x = 59,536,656/4,812
  6. Step 6: Final answer
    x = 12,372.54

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.