Home / 2,221.63-3,043.60-2,138.54

Finding the Fourth Proportional to 2,221.63, 3,043.60 and 2,138.54

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Solution

The fourth proportional to 2,221.63, 3,043.60 and 2,138.54 is: 2,929.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.63 : 3,043.60 = 2,138.54 : x
  2. Step 2: Convert to fraction form
    2,221.63/3,043.60 = 2,138.54/x
  3. Step 3: Cross multiply
    2,221.63x = 3,043.60 × 2,138.54
  4. Step 4: Simplify right side
    2,221.63x = 6,508,839.78
  5. Step 5: Solve for x
    x = 6,508,839.78/2,221.63
  6. Step 6: Final answer
    x = 2,929.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.