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Finding the Fourth Proportional to 4,078.92, 5,639.21 and 3,015.01

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Solution

The fourth proportional to 4,078.92, 5,639.21 and 3,015.01 is: 4,168.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,078.92 : 5,639.21 = 3,015.01 : x
  2. Step 2: Convert to fraction form
    4,078.92/5,639.21 = 3,015.01/x
  3. Step 3: Cross multiply
    4,078.92x = 5,639.21 × 3,015.01
  4. Step 4: Simplify right side
    4,078.92x = 17,002,274.54
  5. Step 5: Solve for x
    x = 17,002,274.54/4,078.92
  6. Step 6: Final answer
    x = 4,168.33

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.