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Finding the Fourth Proportional to 8,479.78, 12,719.81 and 2,933.27

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Solution

The fourth proportional to 8,479.78, 12,719.81 and 2,933.27 is: 4,399.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,479.78 : 12,719.81 = 2,933.27 : x
  2. Step 2: Convert to fraction form
    8,479.78/12,719.81 = 2,933.27/x
  3. Step 3: Cross multiply
    8,479.78x = 12,719.81 × 2,933.27
  4. Step 4: Simplify right side
    8,479.78x = 37,310,637.08
  5. Step 5: Solve for x
    x = 37,310,637.08/8,479.78
  6. Step 6: Final answer
    x = 4,399.95

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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.