Home / 5,509.38-8,261.80-2,221.60

Finding the Fourth Proportional to 5,509.38, 8,261.80 and 2,221.60

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Solution

The fourth proportional to 5,509.38, 8,261.80 and 2,221.60 is: 3,331.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,509.38 : 8,261.80 = 2,221.60 : x
  2. Step 2: Convert to fraction form
    5,509.38/8,261.80 = 2,221.60/x
  3. Step 3: Cross multiply
    5,509.38x = 8,261.80 × 2,221.60
  4. Step 4: Simplify right side
    5,509.38x = 18,354,414.88
  5. Step 5: Solve for x
    x = 18,354,414.88/5,509.38
  6. Step 6: Final answer
    x = 3,331.48

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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.