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Finding the Fourth Proportional to 8,616.88, 12,924.48 and 3,936.64

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Solution

The fourth proportional to 8,616.88, 12,924.48 and 3,936.64 is: 5,904.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,616.88 : 12,924.48 = 3,936.64 : x
  2. Step 2: Convert to fraction form
    8,616.88/12,924.48 = 3,936.64/x
  3. Step 3: Cross multiply
    8,616.88x = 12,924.48 × 3,936.64
  4. Step 4: Simplify right side
    8,616.88x = 50,879,024.95
  5. Step 5: Solve for x
    x = 50,879,024.95/8,616.88
  6. Step 6: Final answer
    x = 5,904.58

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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.