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Finding the Third Proportional to 7,611.75 and 12,723.75

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Solution

The third proportional to 7,611.75 and 12,723.75 is: 21,268.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,611.75 : 12,723.75 = 12,723.75 : x
  2. Step 2: Convert to fraction form
    7,611.75/12,723.75 = 12,723.75/x
  3. Step 3: Cross multiply
    7,611.75x = 12,723.75 × 12,723.75
  4. Step 4: Simplify right side
    7,611.75x = 161,893,814.06
  5. Step 5: Solve for x
    x = 161,893,814.06/7,611.75
  6. Step 6: Final answer
    x = 21,268.93

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Why These Related Problems?

These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.