Home / 5,287.20-7,932.70-3,211.44

Finding the Fourth Proportional to 5,287.20, 7,932.70 and 3,211.44

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Solution

The fourth proportional to 5,287.20, 7,932.70 and 3,211.44 is: 4,818.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,287.20 : 7,932.70 = 3,211.44 : x
  2. Step 2: Convert to fraction form
    5,287.20/7,932.70 = 3,211.44/x
  3. Step 3: Cross multiply
    5,287.20x = 7,932.70 × 3,211.44
  4. Step 4: Simplify right side
    5,287.20x = 25,475,390.09
  5. Step 5: Solve for x
    x = 25,475,390.09/5,287.20
  6. Step 6: Final answer
    x = 4,818.31

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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.