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Finding the Fourth Proportional to 8,288.05, 12,415.28 and 3,839.44

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Solution

The fourth proportional to 8,288.05, 12,415.28 and 3,839.44 is: 5,751.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,288.05 : 12,415.28 = 3,839.44 : x
  2. Step 2: Convert to fraction form
    8,288.05/12,415.28 = 3,839.44/x
  3. Step 3: Cross multiply
    8,288.05x = 12,415.28 × 3,839.44
  4. Step 4: Simplify right side
    8,288.05x = 47,667,722.64
  5. Step 5: Solve for x
    x = 47,667,722.64/8,288.05
  6. Step 6: Final answer
    x = 5,751.38

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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.