Home / 3,399.81-4,691.76-2,220.88

Finding the Fourth Proportional to 3,399.81, 4,691.76 and 2,220.88

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Solution

The fourth proportional to 3,399.81, 4,691.76 and 2,220.88 is: 3,064.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,399.81 : 4,691.76 = 2,220.88 : x
  2. Step 2: Convert to fraction form
    3,399.81/4,691.76 = 2,220.88/x
  3. Step 3: Cross multiply
    3,399.81x = 4,691.76 × 2,220.88
  4. Step 4: Simplify right side
    3,399.81x = 10,419,812.49
  5. Step 5: Solve for x
    x = 10,419,812.49/3,399.81
  6. Step 6: Final answer
    x = 3,064.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.