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Finding the Fourth Proportional to 8,474.91, 12,711.80 and 2,928.33

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Solution

The fourth proportional to 8,474.91, 12,711.80 and 2,928.33 is: 4,392.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,474.91 : 12,711.80 = 2,928.33 : x
  2. Step 2: Convert to fraction form
    8,474.91/12,711.80 = 2,928.33/x
  3. Step 3: Cross multiply
    8,474.91x = 12,711.80 × 2,928.33
  4. Step 4: Simplify right side
    8,474.91x = 37,224,330.65
  5. Step 5: Solve for x
    x = 37,224,330.65/8,474.91
  6. Step 6: Final answer
    x = 4,392.30

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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.