Home / 3,228.40-4,844.40-1,379.20

Finding the Fourth Proportional to 3,228.40, 4,844.40 and 1,379.20

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Solution

The fourth proportional to 3,228.40, 4,844.40 and 1,379.20 is: 2,069.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,228.40 : 4,844.40 = 1,379.20 : x
  2. Step 2: Convert to fraction form
    3,228.40/4,844.40 = 1,379.20/x
  3. Step 3: Cross multiply
    3,228.40x = 4,844.40 × 1,379.20
  4. Step 4: Simplify right side
    3,228.40x = 6,681,396.48
  5. Step 5: Solve for x
    x = 6,681,396.48/3,228.40
  6. Step 6: Final answer
    x = 2,069.57

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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.