Home / 2,028.87-2,799.68-1,189.80

Finding the Fourth Proportional to 2,028.87, 2,799.68 and 1,189.80

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Solution

The fourth proportional to 2,028.87, 2,799.68 and 1,189.80 is: 1,641.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,028.87 : 2,799.68 = 1,189.80 : x
  2. Step 2: Convert to fraction form
    2,028.87/2,799.68 = 1,189.80/x
  3. Step 3: Cross multiply
    2,028.87x = 2,799.68 × 1,189.80
  4. Step 4: Simplify right side
    2,028.87x = 3,331,053.32
  5. Step 5: Solve for x
    x = 3,331,053.32/2,028.87
  6. Step 6: Final answer
    x = 1,641.83

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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.