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Finding the Fourth Proportional to 8,641.36, 12,949.62 and 4,935.88

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Solution

The fourth proportional to 8,641.36, 12,949.62 and 4,935.88 is: 7,396.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,641.36 : 12,949.62 = 4,935.88 : x
  2. Step 2: Convert to fraction form
    8,641.36/12,949.62 = 4,935.88/x
  3. Step 3: Cross multiply
    8,641.36x = 12,949.62 × 4,935.88
  4. Step 4: Simplify right side
    8,641.36x = 63,917,770.37
  5. Step 5: Solve for x
    x = 63,917,770.37/8,641.36
  6. Step 6: Final answer
    x = 7,396.73

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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.