Home / 2,640.36-3,958.92-1,177.50

Finding the Fourth Proportional to 2,640.36, 3,958.92 and 1,177.50

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Solution

The fourth proportional to 2,640.36, 3,958.92 and 1,177.50 is: 1,765.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640.36 : 3,958.92 = 1,177.50 : x
  2. Step 2: Convert to fraction form
    2,640.36/3,958.92 = 1,177.50/x
  3. Step 3: Cross multiply
    2,640.36x = 3,958.92 × 1,177.50
  4. Step 4: Simplify right side
    2,640.36x = 4,661,628.30
  5. Step 5: Solve for x
    x = 4,661,628.30/2,640.36
  6. Step 6: Final answer
    x = 1,765.53

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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.