Home / 1,998.12-2,757.36-1,158.90

Finding the Fourth Proportional to 1,998.12, 2,757.36 and 1,158.90

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Solution

The fourth proportional to 1,998.12, 2,757.36 and 1,158.90 is: 1,599.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998.12 : 2,757.36 = 1,158.90 : x
  2. Step 2: Convert to fraction form
    1,998.12/2,757.36 = 1,158.90/x
  3. Step 3: Cross multiply
    1,998.12x = 2,757.36 × 1,158.90
  4. Step 4: Simplify right side
    1,998.12x = 3,195,504.50
  5. Step 5: Solve for x
    x = 3,195,504.50/1,998.12
  6. Step 6: Final answer
    x = 1,599.26

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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.