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Finding the Third Proportional to 7,974 and 11,728.50

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Solution

The third proportional to 7,974 and 11,728.50 is: 17,250.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,974 : 11,728.50 = 11,728.50 : x
  2. Step 2: Convert to fraction form
    7,974/11,728.50 = 11,728.50/x
  3. Step 3: Cross multiply
    7,974x = 11,728.50 × 11,728.50
  4. Step 4: Simplify right side
    7,974x = 137,557,712.25
  5. Step 5: Solve for x
    x = 137,557,712.25/7,974
  6. Step 6: Final answer
    x = 17,250.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.