Home / 2,205.12-3,043.36-2,137.12

Finding the Fourth Proportional to 2,205.12, 3,043.36 and 2,137.12

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Solution

The fourth proportional to 2,205.12, 3,043.36 and 2,137.12 is: 2,949.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,205.12 : 3,043.36 = 2,137.12 : x
  2. Step 2: Convert to fraction form
    2,205.12/3,043.36 = 2,137.12/x
  3. Step 3: Cross multiply
    2,205.12x = 3,043.36 × 2,137.12
  4. Step 4: Simplify right side
    2,205.12x = 6,504,025.52
  5. Step 5: Solve for x
    x = 6,504,025.52/2,205.12
  6. Step 6: Final answer
    x = 2,949.51

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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.