Home / 3,813.20-5,719.80-1,350.80

Finding the Fourth Proportional to 3,813.20, 5,719.80 and 1,350.80

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Solution

The fourth proportional to 3,813.20, 5,719.80 and 1,350.80 is: 2,026.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,813.20 : 5,719.80 = 1,350.80 : x
  2. Step 2: Convert to fraction form
    3,813.20/5,719.80 = 1,350.80/x
  3. Step 3: Cross multiply
    3,813.20x = 5,719.80 × 1,350.80
  4. Step 4: Simplify right side
    3,813.20x = 7,726,305.84
  5. Step 5: Solve for x
    x = 7,726,305.84/3,813.20
  6. Step 6: Final answer
    x = 2,026.20

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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.