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Finding the Fourth Proportional to 7,800.87, 11,674.58 and 6,755.97

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Solution

The fourth proportional to 7,800.87, 11,674.58 and 6,755.97 is: 10,110.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,800.87 : 11,674.58 = 6,755.97 : x
  2. Step 2: Convert to fraction form
    7,800.87/11,674.58 = 6,755.97/x
  3. Step 3: Cross multiply
    7,800.87x = 11,674.58 × 6,755.97
  4. Step 4: Simplify right side
    7,800.87x = 78,873,078.46
  5. Step 5: Solve for x
    x = 78,873,078.46/7,800.87
  6. Step 6: Final answer
    x = 10,110.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.