Home / 1,998.32-2,757.41-1,158.90

Finding the Fourth Proportional to 1,998.32, 2,757.41 and 1,158.90

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Solution

The fourth proportional to 1,998.32, 2,757.41 and 1,158.90 is: 1,599.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998.32 : 2,757.41 = 1,158.90 : x
  2. Step 2: Convert to fraction form
    1,998.32/2,757.41 = 1,158.90/x
  3. Step 3: Cross multiply
    1,998.32x = 2,757.41 × 1,158.90
  4. Step 4: Simplify right side
    1,998.32x = 3,195,556.65
  5. Step 5: Solve for x
    x = 3,195,556.65/1,998.32
  6. Step 6: Final answer
    x = 1,599.13

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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.