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Finding the Fourth Proportional to 8,622.91, 12,933.78 and 4,238.92

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Solution

The fourth proportional to 8,622.91, 12,933.78 and 4,238.92 is: 6,358.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,622.91 : 12,933.78 = 4,238.92 : x
  2. Step 2: Convert to fraction form
    8,622.91/12,933.78 = 4,238.92/x
  3. Step 3: Cross multiply
    8,622.91x = 12,933.78 × 4,238.92
  4. Step 4: Simplify right side
    8,622.91x = 54,825,258.72
  5. Step 5: Solve for x
    x = 54,825,258.72/8,622.91
  6. Step 6: Final answer
    x = 6,358.09

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1.5x scale

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.