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Finding the Fourth Proportional to 8,618.16, 12,928.46 and 2,773.41

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Solution

The fourth proportional to 8,618.16, 12,928.46 and 2,773.41 is: 4,160.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,618.16 : 12,928.46 = 2,773.41 : x
  2. Step 2: Convert to fraction form
    8,618.16/12,928.46 = 2,773.41/x
  3. Step 3: Cross multiply
    8,618.16x = 12,928.46 × 2,773.41
  4. Step 4: Simplify right side
    8,618.16x = 35,855,920.25
  5. Step 5: Solve for x
    x = 35,855,920.25/8,618.16
  6. Step 6: Final answer
    x = 4,160.51

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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.