Home / 1,998.72-3,003.75-1,177.11

Finding the Fourth Proportional to 1,998.72, 3,003.75 and 1,177.11

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Solution

The fourth proportional to 1,998.72, 3,003.75 and 1,177.11 is: 1,769.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998.72 : 3,003.75 = 1,177.11 : x
  2. Step 2: Convert to fraction form
    1,998.72/3,003.75 = 1,177.11/x
  3. Step 3: Cross multiply
    1,998.72x = 3,003.75 × 1,177.11
  4. Step 4: Simplify right side
    1,998.72x = 3,535,744.16
  5. Step 5: Solve for x
    x = 3,535,744.16/1,998.72
  6. Step 6: Final answer
    x = 1,769.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.