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Finding the Fourth Proportional to 8,918.56, 13,377.21 and 3,079.27

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Solution

The fourth proportional to 8,918.56, 13,377.21 and 3,079.27 is: 4,618.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.56 : 13,377.21 = 3,079.27 : x
  2. Step 2: Convert to fraction form
    8,918.56/13,377.21 = 3,079.27/x
  3. Step 3: Cross multiply
    8,918.56x = 13,377.21 × 3,079.27
  4. Step 4: Simplify right side
    8,918.56x = 41,192,041.44
  5. Step 5: Solve for x
    x = 41,192,041.44/8,918.56
  6. Step 6: Final answer
    x = 4,618.69

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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.