Home / 1,998.11-2,757.20-1,159.09

Finding the Fourth Proportional to 1,998.11, 2,757.20 and 1,159.09

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Solution

The fourth proportional to 1,998.11, 2,757.20 and 1,159.09 is: 1,599.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998.11 : 2,757.20 = 1,159.09 : x
  2. Step 2: Convert to fraction form
    1,998.11/2,757.20 = 1,159.09/x
  3. Step 3: Cross multiply
    1,998.11x = 2,757.20 × 1,159.09
  4. Step 4: Simplify right side
    1,998.11x = 3,195,830.26
  5. Step 5: Solve for x
    x = 3,195,830.26/1,998.11
  6. Step 6: Final answer
    x = 1,599.42

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Double scale
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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.