Home / 7,222.20-10,830.10-3,327.80

Finding the Fourth Proportional to 7,222.20, 10,830.10 and 3,327.80

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Solution

The fourth proportional to 7,222.20, 10,830.10 and 3,327.80 is: 4,990.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,222.20 : 10,830.10 = 3,327.80 : x
  2. Step 2: Convert to fraction form
    7,222.20/10,830.10 = 3,327.80/x
  3. Step 3: Cross multiply
    7,222.20x = 10,830.10 × 3,327.80
  4. Step 4: Simplify right side
    7,222.20x = 36,040,406.78
  5. Step 5: Solve for x
    x = 36,040,406.78/7,222.20
  6. Step 6: Final answer
    x = 4,990.23

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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.