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Finding the Fourth Proportional to 3,958.13, 5,938.91 and 1,879.60

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Solution

The fourth proportional to 3,958.13, 5,938.91 and 1,879.60 is: 2,820.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,958.13 : 5,938.91 = 1,879.60 : x
  2. Step 2: Convert to fraction form
    3,958.13/5,938.91 = 1,879.60/x
  3. Step 3: Cross multiply
    3,958.13x = 5,938.91 × 1,879.60
  4. Step 4: Simplify right side
    3,958.13x = 11,162,775.24
  5. Step 5: Solve for x
    x = 11,162,775.24/3,958.13
  6. Step 6: Final answer
    x = 2,820.22

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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.