Home / 5,507.20-8,249.60-3,420.80

Finding the Fourth Proportional to 5,507.20, 8,249.60 and 3,420.80

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Solution

The fourth proportional to 5,507.20, 8,249.60 and 3,420.80 is: 5,124.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,507.20 : 8,249.60 = 3,420.80 : x
  2. Step 2: Convert to fraction form
    5,507.20/8,249.60 = 3,420.80/x
  3. Step 3: Cross multiply
    5,507.20x = 8,249.60 × 3,420.80
  4. Step 4: Simplify right side
    5,507.20x = 28,220,231.68
  5. Step 5: Solve for x
    x = 28,220,231.68/5,507.20
  6. Step 6: Final answer
    x = 5,124.24

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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.