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Finding the Fourth Proportional to 8,384.80, 12,568.02 and 4,218.16

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Solution

The fourth proportional to 8,384.80, 12,568.02 and 4,218.16 is: 6,322.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,384.80 : 12,568.02 = 4,218.16 : x
  2. Step 2: Convert to fraction form
    8,384.80/12,568.02 = 4,218.16/x
  3. Step 3: Cross multiply
    8,384.80x = 12,568.02 × 4,218.16
  4. Step 4: Simplify right side
    8,384.80x = 53,013,919.24
  5. Step 5: Solve for x
    x = 53,013,919.24/8,384.80
  6. Step 6: Final answer
    x = 6,322.62

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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.