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Finding the Fourth Proportional to 3,918.20, 5,879.12 and 3,746.88

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Solution

The fourth proportional to 3,918.20, 5,879.12 and 3,746.88 is: 5,622.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.20 : 5,879.12 = 3,746.88 : x
  2. Step 2: Convert to fraction form
    3,918.20/5,879.12 = 3,746.88/x
  3. Step 3: Cross multiply
    3,918.20x = 5,879.12 × 3,746.88
  4. Step 4: Simplify right side
    3,918.20x = 22,028,338.41
  5. Step 5: Solve for x
    x = 22,028,338.41/3,918.20
  6. Step 6: Final answer
    x = 5,622.06

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.