Home / 6,724.24-9,279.28-3,891.22

Finding the Fourth Proportional to 6,724.24, 9,279.28 and 3,891.22

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Solution

The fourth proportional to 6,724.24, 9,279.28 and 3,891.22 is: 5,369.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,724.24 : 9,279.28 = 3,891.22 : x
  2. Step 2: Convert to fraction form
    6,724.24/9,279.28 = 3,891.22/x
  3. Step 3: Cross multiply
    6,724.24x = 9,279.28 × 3,891.22
  4. Step 4: Simplify right side
    6,724.24x = 36,107,687.00
  5. Step 5: Solve for x
    x = 36,107,687.00/6,724.24
  6. Step 6: Final answer
    x = 5,369.78

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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.