Home / 3,990.92-5,507.70-2,222.52

Finding the Fourth Proportional to 3,990.92, 5,507.70 and 2,222.52

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Solution

The fourth proportional to 3,990.92, 5,507.70 and 2,222.52 is: 3,067.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.92 : 5,507.70 = 2,222.52 : x
  2. Step 2: Convert to fraction form
    3,990.92/5,507.70 = 2,222.52/x
  3. Step 3: Cross multiply
    3,990.92x = 5,507.70 × 2,222.52
  4. Step 4: Simplify right side
    3,990.92x = 12,240,973.40
  5. Step 5: Solve for x
    x = 12,240,973.40/3,990.92
  6. Step 6: Final answer
    x = 3,067.21

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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.