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Finding the Fourth Proportional to 7,992.78, 11,020.23 and 6,571.50

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Solution

The fourth proportional to 7,992.78, 11,020.23 and 6,571.50 is: 9,060.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,992.78 : 11,020.23 = 6,571.50 : x
  2. Step 2: Convert to fraction form
    7,992.78/11,020.23 = 6,571.50/x
  3. Step 3: Cross multiply
    7,992.78x = 11,020.23 × 6,571.50
  4. Step 4: Simplify right side
    7,992.78x = 72,419,441.45
  5. Step 5: Solve for x
    x = 72,419,441.45/7,992.78
  6. Step 6: Final answer
    x = 9,060.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.