Home / 2,171.28-3,250.80-1,689.96

Finding the Fourth Proportional to 2,171.28, 3,250.80 and 1,689.96

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Solution

The fourth proportional to 2,171.28, 3,250.80 and 1,689.96 is: 2,530.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,171.28 : 3,250.80 = 1,689.96 : x
  2. Step 2: Convert to fraction form
    2,171.28/3,250.80 = 1,689.96/x
  3. Step 3: Cross multiply
    2,171.28x = 3,250.80 × 1,689.96
  4. Step 4: Simplify right side
    2,171.28x = 5,493,721.97
  5. Step 5: Solve for x
    x = 5,493,721.97/2,171.28
  6. Step 6: Final answer
    x = 2,530.18

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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.