Home / 7,789.35-11,687.98-3,406.85

Finding the Fourth Proportional to 7,789.35, 11,687.98 and 3,406.85

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Solution

The fourth proportional to 7,789.35, 11,687.98 and 3,406.85 is: 5,112.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,789.35 : 11,687.98 = 3,406.85 : x
  2. Step 2: Convert to fraction form
    7,789.35/11,687.98 = 3,406.85/x
  3. Step 3: Cross multiply
    7,789.35x = 11,687.98 × 3,406.85
  4. Step 4: Simplify right side
    7,789.35x = 39,819,194.66
  5. Step 5: Solve for x
    x = 39,819,194.66/7,789.35
  6. Step 6: Final answer
    x = 5,112.00

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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.