Home / 6,912.06-9,538.85-3,928.02

Finding the Fourth Proportional to 6,912.06, 9,538.85 and 3,928.02

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Solution

The fourth proportional to 6,912.06, 9,538.85 and 3,928.02 is: 5,420.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912.06 : 9,538.85 = 3,928.02 : x
  2. Step 2: Convert to fraction form
    6,912.06/9,538.85 = 3,928.02/x
  3. Step 3: Cross multiply
    6,912.06x = 9,538.85 × 3,928.02
  4. Step 4: Simplify right side
    6,912.06x = 37,468,793.58
  5. Step 5: Solve for x
    x = 37,468,793.58/6,912.06
  6. Step 6: Final answer
    x = 5,420.79

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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.