Home / 3,355.00-5,028.15-1,378.39

Finding the Fourth Proportional to 3,355.00, 5,028.15 and 1,378.39

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Solution

The fourth proportional to 3,355.00, 5,028.15 and 1,378.39 is: 2,065.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,355.00 : 5,028.15 = 1,378.39 : x
  2. Step 2: Convert to fraction form
    3,355.00/5,028.15 = 1,378.39/x
  3. Step 3: Cross multiply
    3,355.00x = 5,028.15 × 1,378.39
  4. Step 4: Simplify right side
    3,355.00x = 6,930,739.11
  5. Step 5: Solve for x
    x = 6,930,739.11/3,355.00
  6. Step 6: Final answer
    x = 2,065.80

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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.