Home / 3,576.80-5,351.40-2,189.84

Finding the Fourth Proportional to 3,576.80, 5,351.40 and 2,189.84

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Solution

The fourth proportional to 3,576.80, 5,351.40 and 2,189.84 is: 3,276.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,576.80 : 5,351.40 = 2,189.84 : x
  2. Step 2: Convert to fraction form
    3,576.80/5,351.40 = 2,189.84/x
  3. Step 3: Cross multiply
    3,576.80x = 5,351.40 × 2,189.84
  4. Step 4: Simplify right side
    3,576.80x = 11,718,709.78
  5. Step 5: Solve for x
    x = 11,718,709.78/3,576.80
  6. Step 6: Final answer
    x = 3,276.31

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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.