Home / 7,420.80-11,132.88-2,226.76

Finding the Fourth Proportional to 7,420.80, 11,132.88 and 2,226.76

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Solution

The fourth proportional to 7,420.80, 11,132.88 and 2,226.76 is: 3,340.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.80 : 11,132.88 = 2,226.76 : x
  2. Step 2: Convert to fraction form
    7,420.80/11,132.88 = 2,226.76/x
  3. Step 3: Cross multiply
    7,420.80x = 11,132.88 × 2,226.76
  4. Step 4: Simplify right side
    7,420.80x = 24,790,251.87
  5. Step 5: Solve for x
    x = 24,790,251.87/7,420.80
  6. Step 6: Final answer
    x = 3,340.64

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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.