Home / 2,311.68-3,190.56-2,171.02

Finding the Fourth Proportional to 2,311.68, 3,190.56 and 2,171.02

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Solution

The fourth proportional to 2,311.68, 3,190.56 and 2,171.02 is: 2,996.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.68 : 3,190.56 = 2,171.02 : x
  2. Step 2: Convert to fraction form
    2,311.68/3,190.56 = 2,171.02/x
  3. Step 3: Cross multiply
    2,311.68x = 3,190.56 × 2,171.02
  4. Step 4: Simplify right side
    2,311.68x = 6,926,769.57
  5. Step 5: Solve for x
    x = 6,926,769.57/2,311.68
  6. Step 6: Final answer
    x = 2,996.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.