Home / 3,399.12-4,691.78-2,220.37

Finding the Fourth Proportional to 3,399.12, 4,691.78 and 2,220.37

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Solution

The fourth proportional to 3,399.12, 4,691.78 and 2,220.37 is: 3,064.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,399.12 : 4,691.78 = 2,220.37 : x
  2. Step 2: Convert to fraction form
    3,399.12/4,691.78 = 2,220.37/x
  3. Step 3: Cross multiply
    3,399.12x = 4,691.78 × 2,220.37
  4. Step 4: Simplify right side
    3,399.12x = 10,417,487.56
  5. Step 5: Solve for x
    x = 10,417,487.56/3,399.12
  6. Step 6: Final answer
    x = 3,064.76

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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.