Home / 3,220.37-4,438.83-2,157.77

Finding the Fourth Proportional to 3,220.37, 4,438.83 and 2,157.77

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Solution

The fourth proportional to 3,220.37, 4,438.83 and 2,157.77 is: 2,974.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.37 : 4,438.83 = 2,157.77 : x
  2. Step 2: Convert to fraction form
    3,220.37/4,438.83 = 2,157.77/x
  3. Step 3: Cross multiply
    3,220.37x = 4,438.83 × 2,157.77
  4. Step 4: Simplify right side
    3,220.37x = 9,577,974.21
  5. Step 5: Solve for x
    x = 9,577,974.21/3,220.37
  6. Step 6: Final answer
    x = 2,974.18

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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.