Home / 2,819.22-3,889.26-1,639.59

Finding the Fourth Proportional to 2,819.22, 3,889.26 and 1,639.59

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Solution

The fourth proportional to 2,819.22, 3,889.26 and 1,639.59 is: 2,261.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.22 : 3,889.26 = 1,639.59 : x
  2. Step 2: Convert to fraction form
    2,819.22/3,889.26 = 1,639.59/x
  3. Step 3: Cross multiply
    2,819.22x = 3,889.26 × 1,639.59
  4. Step 4: Simplify right side
    2,819.22x = 6,376,791.80
  5. Step 5: Solve for x
    x = 6,376,791.80/2,819.22
  6. Step 6: Final answer
    x = 2,261.90

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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.