Home / 3,933.20-5,427.72-2,255.60

Finding the Fourth Proportional to 3,933.20, 5,427.72 and 2,255.60

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Solution

The fourth proportional to 3,933.20, 5,427.72 and 2,255.60 is: 3,112.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,933.20 : 5,427.72 = 2,255.60 : x
  2. Step 2: Convert to fraction form
    3,933.20/5,427.72 = 2,255.60/x
  3. Step 3: Cross multiply
    3,933.20x = 5,427.72 × 2,255.60
  4. Step 4: Simplify right side
    3,933.20x = 12,242,778.80
  5. Step 5: Solve for x
    x = 12,242,778.80/3,933.20
  6. Step 6: Final answer
    x = 3,112.67

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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.