Home / 1,998.14-2,757.31-1,158.77

Finding the Fourth Proportional to 1,998.14, 2,757.31 and 1,158.77

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Solution

The fourth proportional to 1,998.14, 2,757.31 and 1,158.77 is: 1,599.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998.14 : 2,757.31 = 1,158.77 : x
  2. Step 2: Convert to fraction form
    1,998.14/2,757.31 = 1,158.77/x
  3. Step 3: Cross multiply
    1,998.14x = 2,757.31 × 1,158.77
  4. Step 4: Simplify right side
    1,998.14x = 3,195,088.11
  5. Step 5: Solve for x
    x = 3,195,088.11/1,998.14
  6. Step 6: Final answer
    x = 1,599.03

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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.