Home / 6,381.20-9,571.74-2,221.20

Finding the Fourth Proportional to 6,381.20, 9,571.74 and 2,221.20

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Solution

The fourth proportional to 6,381.20, 9,571.74 and 2,221.20 is: 3,331.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,381.20 : 9,571.74 = 2,221.20 : x
  2. Step 2: Convert to fraction form
    6,381.20/9,571.74 = 2,221.20/x
  3. Step 3: Cross multiply
    6,381.20x = 9,571.74 × 2,221.20
  4. Step 4: Simplify right side
    6,381.20x = 21,260,748.89
  5. Step 5: Solve for x
    x = 21,260,748.89/6,381.20
  6. Step 6: Final answer
    x = 3,331.78

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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.