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Finding the Fourth Proportional to 8,388.12, 12,579.95 and 2,544.78

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Solution

The fourth proportional to 8,388.12, 12,579.95 and 2,544.78 is: 3,816.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,388.12 : 12,579.95 = 2,544.78 : x
  2. Step 2: Convert to fraction form
    8,388.12/12,579.95 = 2,544.78/x
  3. Step 3: Cross multiply
    8,388.12x = 12,579.95 × 2,544.78
  4. Step 4: Simplify right side
    8,388.12x = 32,013,192.44
  5. Step 5: Solve for x
    x = 32,013,192.44/8,388.12
  6. Step 6: Final answer
    x = 3,816.49

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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.