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Finding the Fourth Proportional to 8,410.38, 12,623.34 and 4,253.28

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Solution

The fourth proportional to 8,410.38, 12,623.34 and 4,253.28 is: 6,383.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,410.38 : 12,623.34 = 4,253.28 : x
  2. Step 2: Convert to fraction form
    8,410.38/12,623.34 = 4,253.28/x
  3. Step 3: Cross multiply
    8,410.38x = 12,623.34 × 4,253.28
  4. Step 4: Simplify right side
    8,410.38x = 53,690,599.56
  5. Step 5: Solve for x
    x = 53,690,599.56/8,410.38
  6. Step 6: Final answer
    x = 6,383.85

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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.