Home / 8,622-12,939.08-3,429.09

Finding the Fourth Proportional to 8,622, 12,939.08 and 3,429.09

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Solution

The fourth proportional to 8,622, 12,939.08 and 3,429.09 is: 5,146.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,622 : 12,939.08 = 3,429.09 : x
  2. Step 2: Convert to fraction form
    8,622/12,939.08 = 3,429.09/x
  3. Step 3: Cross multiply
    8,622x = 12,939.08 × 3,429.09
  4. Step 4: Simplify right side
    8,622x = 44,369,252.69
  5. Step 5: Solve for x
    x = 44,369,252.69/8,622
  6. Step 6: Final answer
    x = 5,146.05

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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.