Home / 2,021.22-2,789.64-1,928.88

Finding the Fourth Proportional to 2,021.22, 2,789.64 and 1,928.88

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Solution

The fourth proportional to 2,021.22, 2,789.64 and 1,928.88 is: 2,662.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.22 : 2,789.64 = 1,928.88 : x
  2. Step 2: Convert to fraction form
    2,021.22/2,789.64 = 1,928.88/x
  3. Step 3: Cross multiply
    2,021.22x = 2,789.64 × 1,928.88
  4. Step 4: Simplify right side
    2,021.22x = 5,380,880.80
  5. Step 5: Solve for x
    x = 5,380,880.80/2,021.22
  6. Step 6: Final answer
    x = 2,662.19

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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.