Home / 6,724.06-9,279-3,739.78

Finding the Fourth Proportional to 6,724.06, 9,279 and 3,739.78

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Solution

The fourth proportional to 6,724.06, 9,279 and 3,739.78 is: 5,160.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,724.06 : 9,279 = 3,739.78 : x
  2. Step 2: Convert to fraction form
    6,724.06/9,279 = 3,739.78/x
  3. Step 3: Cross multiply
    6,724.06x = 9,279 × 3,739.78
  4. Step 4: Simplify right side
    6,724.06x = 34,701,418.62
  5. Step 5: Solve for x
    x = 34,701,418.62/6,724.06
  6. Step 6: Final answer
    x = 5,160.78

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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.