Home / 6,906.12-9,528.30-3,921.72

Finding the Fourth Proportional to 6,906.12, 9,528.30 and 3,921.72

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Solution

The fourth proportional to 6,906.12, 9,528.30 and 3,921.72 is: 5,410.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,906.12 : 9,528.30 = 3,921.72 : x
  2. Step 2: Convert to fraction form
    6,906.12/9,528.30 = 3,921.72/x
  3. Step 3: Cross multiply
    6,906.12x = 9,528.30 × 3,921.72
  4. Step 4: Simplify right side
    6,906.12x = 37,367,324.68
  5. Step 5: Solve for x
    x = 37,367,324.68/6,906.12
  6. Step 6: Final answer
    x = 5,410.76

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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.