Home / 5,441.20-8,161.80-5,205.90

Finding the Fourth Proportional to 5,441.20, 8,161.80 and 5,205.90

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Solution

The fourth proportional to 5,441.20, 8,161.80 and 5,205.90 is: 7,808.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,441.20 : 8,161.80 = 5,205.90 : x
  2. Step 2: Convert to fraction form
    5,441.20/8,161.80 = 5,205.90/x
  3. Step 3: Cross multiply
    5,441.20x = 8,161.80 × 5,205.90
  4. Step 4: Simplify right side
    5,441.20x = 42,489,514.62
  5. Step 5: Solve for x
    x = 42,489,514.62/5,441.20
  6. Step 6: Final answer
    x = 7,808.85

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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.