Home / 6,912.24-9,540.48-3,929.76

Finding the Fourth Proportional to 6,912.24, 9,540.48 and 3,929.76

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Solution

The fourth proportional to 6,912.24, 9,540.48 and 3,929.76 is: 5,423.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912.24 : 9,540.48 = 3,929.76 : x
  2. Step 2: Convert to fraction form
    6,912.24/9,540.48 = 3,929.76/x
  3. Step 3: Cross multiply
    6,912.24x = 9,540.48 × 3,929.76
  4. Step 4: Simplify right side
    6,912.24x = 37,491,796.68
  5. Step 5: Solve for x
    x = 37,491,796.68/6,912.24
  6. Step 6: Final answer
    x = 5,423.97

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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.