Home / 2,120.26-3,179.76-803.03

Finding the Fourth Proportional to 2,120.26, 3,179.76 and 803.03

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Solution

The fourth proportional to 2,120.26, 3,179.76 and 803.03 is: 1,204.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.26 : 3,179.76 = 803.03 : x
  2. Step 2: Convert to fraction form
    2,120.26/3,179.76 = 803.03/x
  3. Step 3: Cross multiply
    2,120.26x = 3,179.76 × 803.03
  4. Step 4: Simplify right side
    2,120.26x = 2,553,442.67
  5. Step 5: Solve for x
    x = 2,553,442.67/2,120.26
  6. Step 6: Final answer
    x = 1,204.31

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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.