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Finding the Fourth Proportional to 7,149.54, 10,730.74 and 3,641.88

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Solution

The fourth proportional to 7,149.54, 10,730.74 and 3,641.88 is: 5,466.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,149.54 : 10,730.74 = 3,641.88 : x
  2. Step 2: Convert to fraction form
    7,149.54/10,730.74 = 3,641.88/x
  3. Step 3: Cross multiply
    7,149.54x = 10,730.74 × 3,641.88
  4. Step 4: Simplify right side
    7,149.54x = 39,080,067.39
  5. Step 5: Solve for x
    x = 39,080,067.39/7,149.54
  6. Step 6: Final answer
    x = 5,466.10

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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.