Home / 3,619.44-5,429.16-1,428.39

Finding the Fourth Proportional to 3,619.44, 5,429.16 and 1,428.39

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Solution

The fourth proportional to 3,619.44, 5,429.16 and 1,428.39 is: 2,142.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.44 : 5,429.16 = 1,428.39 : x
  2. Step 2: Convert to fraction form
    3,619.44/5,429.16 = 1,428.39/x
  3. Step 3: Cross multiply
    3,619.44x = 5,429.16 × 1,428.39
  4. Step 4: Simplify right side
    3,619.44x = 7,754,957.85
  5. Step 5: Solve for x
    x = 7,754,957.85/3,619.44
  6. Step 6: Final answer
    x = 2,142.59

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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.