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Finding the Fourth Proportional to 8,474.74, 12,717.94 and 2,928.09

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Solution

The fourth proportional to 8,474.74, 12,717.94 and 2,928.09 is: 4,394.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,474.74 : 12,717.94 = 2,928.09 : x
  2. Step 2: Convert to fraction form
    8,474.74/12,717.94 = 2,928.09/x
  3. Step 3: Cross multiply
    8,474.74x = 12,717.94 × 2,928.09
  4. Step 4: Simplify right side
    8,474.74x = 37,239,301.62
  5. Step 5: Solve for x
    x = 37,239,301.62/8,474.74
  6. Step 6: Final answer
    x = 4,394.15

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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.