Home / 7,422.18-11,128.41-3,961.86

Finding the Fourth Proportional to 7,422.18, 11,128.41 and 3,961.86

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Solution

The fourth proportional to 7,422.18, 11,128.41 and 3,961.86 is: 5,940.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,422.18 : 11,128.41 = 3,961.86 : x
  2. Step 2: Convert to fraction form
    7,422.18/11,128.41 = 3,961.86/x
  3. Step 3: Cross multiply
    7,422.18x = 11,128.41 × 3,961.86
  4. Step 4: Simplify right side
    7,422.18x = 44,089,202.44
  5. Step 5: Solve for x
    x = 44,089,202.44/7,422.18
  6. Step 6: Final answer
    x = 5,940.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.