Home / 8,618.92-12,928.43-3,072.48

Finding the Fourth Proportional to 8,618.92, 12,928.43 and 3,072.48

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Solution

The fourth proportional to 8,618.92, 12,928.43 and 3,072.48 is: 4,608.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,618.92 : 12,928.43 = 3,072.48 : x
  2. Step 2: Convert to fraction form
    8,618.92/12,928.43 = 3,072.48/x
  3. Step 3: Cross multiply
    8,618.92x = 12,928.43 × 3,072.48
  4. Step 4: Simplify right side
    8,618.92x = 39,722,342.61
  5. Step 5: Solve for x
    x = 39,722,342.61/8,618.92
  6. Step 6: Final answer
    x = 4,608.74

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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.