Home / 3,481.12-5,220.96-1,289.80

Finding the Fourth Proportional to 3,481.12, 5,220.96 and 1,289.80

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Solution

The fourth proportional to 3,481.12, 5,220.96 and 1,289.80 is: 1,934.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,481.12 : 5,220.96 = 1,289.80 : x
  2. Step 2: Convert to fraction form
    3,481.12/5,220.96 = 1,289.80/x
  3. Step 3: Cross multiply
    3,481.12x = 5,220.96 × 1,289.80
  4. Step 4: Simplify right side
    3,481.12x = 6,733,994.21
  5. Step 5: Solve for x
    x = 6,733,994.21/3,481.12
  6. Step 6: Final answer
    x = 1,934.43

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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.