Home / 2,819.09-3,890.33-1,577.09

Finding the Fourth Proportional to 2,819.09, 3,890.33 and 1,577.09

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Solution

The fourth proportional to 2,819.09, 3,890.33 and 1,577.09 is: 2,176.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.09 : 3,890.33 = 1,577.09 : x
  2. Step 2: Convert to fraction form
    2,819.09/3,890.33 = 1,577.09/x
  3. Step 3: Cross multiply
    2,819.09x = 3,890.33 × 1,577.09
  4. Step 4: Simplify right side
    2,819.09x = 6,135,414.21
  5. Step 5: Solve for x
    x = 6,135,414.21/2,819.09
  6. Step 6: Final answer
    x = 2,176.38

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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.