Home / 3,639.18-5,454.11-3,168.72

Finding the Fourth Proportional to 3,639.18, 5,454.11 and 3,168.72

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Solution

The fourth proportional to 3,639.18, 5,454.11 and 3,168.72 is: 4,749.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.18 : 5,454.11 = 3,168.72 : x
  2. Step 2: Convert to fraction form
    3,639.18/5,454.11 = 3,168.72/x
  3. Step 3: Cross multiply
    3,639.18x = 5,454.11 × 3,168.72
  4. Step 4: Simplify right side
    3,639.18x = 17,282,531.60
  5. Step 5: Solve for x
    x = 17,282,531.60/3,639.18
  6. Step 6: Final answer
    x = 4,749.02

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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.