Home / 7,789.94-11,679.23-3,108.54

Finding the Fourth Proportional to 7,789.94, 11,679.23 and 3,108.54

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Solution

The fourth proportional to 7,789.94, 11,679.23 and 3,108.54 is: 4,660.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,789.94 : 11,679.23 = 3,108.54 : x
  2. Step 2: Convert to fraction form
    7,789.94/11,679.23 = 3,108.54/x
  3. Step 3: Cross multiply
    7,789.94x = 11,679.23 × 3,108.54
  4. Step 4: Simplify right side
    7,789.94x = 36,305,338.08
  5. Step 5: Solve for x
    x = 36,305,338.08/7,789.94
  6. Step 6: Final answer
    x = 4,660.54

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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.