Home / 2,205.48-3,308.77-819.21

Finding the Fourth Proportional to 2,205.48, 3,308.77 and 819.21

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Solution

The fourth proportional to 2,205.48, 3,308.77 and 819.21 is: 1,229.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,205.48 : 3,308.77 = 819.21 : x
  2. Step 2: Convert to fraction form
    2,205.48/3,308.77 = 819.21/x
  3. Step 3: Cross multiply
    2,205.48x = 3,308.77 × 819.21
  4. Step 4: Simplify right side
    2,205.48x = 2,710,577.47
  5. Step 5: Solve for x
    x = 2,710,577.47/2,205.48
  6. Step 6: Final answer
    x = 1,229.02

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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.