Home / 2,640.60-3,961.71-1,180.98

Finding the Fourth Proportional to 2,640.60, 3,961.71 and 1,180.98

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Solution

The fourth proportional to 2,640.60, 3,961.71 and 1,180.98 is: 1,771.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640.60 : 3,961.71 = 1,180.98 : x
  2. Step 2: Convert to fraction form
    2,640.60/3,961.71 = 1,180.98/x
  3. Step 3: Cross multiply
    2,640.60x = 3,961.71 × 1,180.98
  4. Step 4: Simplify right side
    2,640.60x = 4,678,700.28
  5. Step 5: Solve for x
    x = 4,678,700.28/2,640.60
  6. Step 6: Final answer
    x = 1,771.83

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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.