Home / 6,991.24-9,647.94-3,847.72

Finding the Fourth Proportional to 6,991.24, 9,647.94 and 3,847.72

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Solution

The fourth proportional to 6,991.24, 9,647.94 and 3,847.72 is: 5,309.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,991.24 : 9,647.94 = 3,847.72 : x
  2. Step 2: Convert to fraction form
    6,991.24/9,647.94 = 3,847.72/x
  3. Step 3: Cross multiply
    6,991.24x = 9,647.94 × 3,847.72
  4. Step 4: Simplify right side
    6,991.24x = 37,122,571.70
  5. Step 5: Solve for x
    x = 37,122,571.70/6,991.24
  6. Step 6: Final answer
    x = 5,309.87

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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.