Home / 3,481.20-4,803.78-1,909.28

Finding the Fourth Proportional to 3,481.20, 4,803.78 and 1,909.28

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Solution

The fourth proportional to 3,481.20, 4,803.78 and 1,909.28 is: 2,634.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,481.20 : 4,803.78 = 1,909.28 : x
  2. Step 2: Convert to fraction form
    3,481.20/4,803.78 = 1,909.28/x
  3. Step 3: Cross multiply
    3,481.20x = 4,803.78 × 1,909.28
  4. Step 4: Simplify right side
    3,481.20x = 9,171,761.08
  5. Step 5: Solve for x
    x = 9,171,761.08/3,481.20
  6. Step 6: Final answer
    x = 2,634.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.