Home / 1,998.06-2,757.40-1,158.60

Finding the Fourth Proportional to 1,998.06, 2,757.40 and 1,158.60

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Solution

The fourth proportional to 1,998.06, 2,757.40 and 1,158.60 is: 1,598.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998.06 : 2,757.40 = 1,158.60 : x
  2. Step 2: Convert to fraction form
    1,998.06/2,757.40 = 1,158.60/x
  3. Step 3: Cross multiply
    1,998.06x = 2,757.40 × 1,158.60
  4. Step 4: Simplify right side
    1,998.06x = 3,194,723.64
  5. Step 5: Solve for x
    x = 3,194,723.64/1,998.06
  6. Step 6: Final answer
    x = 1,598.91

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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.