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Finding the Fourth Proportional to 7,149.36, 10,724.04 and 3,451.44

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Solution

The fourth proportional to 7,149.36, 10,724.04 and 3,451.44 is: 5,177.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,149.36 : 10,724.04 = 3,451.44 : x
  2. Step 2: Convert to fraction form
    7,149.36/10,724.04 = 3,451.44/x
  3. Step 3: Cross multiply
    7,149.36x = 10,724.04 × 3,451.44
  4. Step 4: Simplify right side
    7,149.36x = 37,013,380.62
  5. Step 5: Solve for x
    x = 37,013,380.62/7,149.36
  6. Step 6: Final answer
    x = 5,177.16

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1.5x scale

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.