Home / 3,930.44-5,890.28-2,172.83

Finding the Fourth Proportional to 3,930.44, 5,890.28 and 2,172.83

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Solution

The fourth proportional to 3,930.44, 5,890.28 and 2,172.83 is: 3,256.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.44 : 5,890.28 = 2,172.83 : x
  2. Step 2: Convert to fraction form
    3,930.44/5,890.28 = 2,172.83/x
  3. Step 3: Cross multiply
    3,930.44x = 5,890.28 × 2,172.83
  4. Step 4: Simplify right side
    3,930.44x = 12,798,566.23
  5. Step 5: Solve for x
    x = 12,798,566.23/3,930.44
  6. Step 6: Final answer
    x = 3,256.27

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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.