Home / 2,141.11-3,211.62-986.86

Finding the Fourth Proportional to 2,141.11, 3,211.62 and 986.86

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Solution

The fourth proportional to 2,141.11, 3,211.62 and 986.86 is: 1,480.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,141.11 : 3,211.62 = 986.86 : x
  2. Step 2: Convert to fraction form
    2,141.11/3,211.62 = 986.86/x
  3. Step 3: Cross multiply
    2,141.11x = 3,211.62 × 986.86
  4. Step 4: Simplify right side
    2,141.11x = 3,169,414.38
  5. Step 5: Solve for x
    x = 3,169,414.38/2,141.11
  6. Step 6: Final answer
    x = 1,480.27

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1.5x scale

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.