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Finding the Fourth Proportional to 8,618.04, 12,928.11 and 3,071.97

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Solution

The fourth proportional to 8,618.04, 12,928.11 and 3,071.97 is: 4,608.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,618.04 : 12,928.11 = 3,071.97 : x
  2. Step 2: Convert to fraction form
    8,618.04/12,928.11 = 3,071.97/x
  3. Step 3: Cross multiply
    8,618.04x = 12,928.11 × 3,071.97
  4. Step 4: Simplify right side
    8,618.04x = 39,714,766.08
  5. Step 5: Solve for x
    x = 39,714,766.08/8,618.04
  6. Step 6: Final answer
    x = 4,608.33

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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.