Home / 3,930.22-5,890.47-1,982.98

Finding the Fourth Proportional to 3,930.22, 5,890.47 and 1,982.98

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Solution

The fourth proportional to 3,930.22, 5,890.47 and 1,982.98 is: 2,972.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.22 : 5,890.47 = 1,982.98 : x
  2. Step 2: Convert to fraction form
    3,930.22/5,890.47 = 1,982.98/x
  3. Step 3: Cross multiply
    3,930.22x = 5,890.47 × 1,982.98
  4. Step 4: Simplify right side
    3,930.22x = 11,680,684.20
  5. Step 5: Solve for x
    x = 11,680,684.20/3,930.22
  6. Step 6: Final answer
    x = 2,972.02

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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.