Home / 3,057.21-4,218.90-1,798.41

Finding the Fourth Proportional to 3,057.21, 4,218.90 and 1,798.41

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Solution

The fourth proportional to 3,057.21, 4,218.90 and 1,798.41 is: 2,481.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,057.21 : 4,218.90 = 1,798.41 : x
  2. Step 2: Convert to fraction form
    3,057.21/4,218.90 = 1,798.41/x
  3. Step 3: Cross multiply
    3,057.21x = 4,218.90 × 1,798.41
  4. Step 4: Simplify right side
    3,057.21x = 7,587,311.95
  5. Step 5: Solve for x
    x = 7,587,311.95/3,057.21
  6. Step 6: Final answer
    x = 2,481.78

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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.