Home / 2,140.28-3,211.38-1,164.92

Finding the Fourth Proportional to 2,140.28, 3,211.38 and 1,164.92

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Solution

The fourth proportional to 2,140.28, 3,211.38 and 1,164.92 is: 1,747.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140.28 : 3,211.38 = 1,164.92 : x
  2. Step 2: Convert to fraction form
    2,140.28/3,211.38 = 1,164.92/x
  3. Step 3: Cross multiply
    2,140.28x = 3,211.38 × 1,164.92
  4. Step 4: Simplify right side
    2,140.28x = 3,741,000.79
  5. Step 5: Solve for x
    x = 3,741,000.79/2,140.28
  6. Step 6: Final answer
    x = 1,747.90

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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.