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Finding the Fourth Proportional to 8,579.80, 12,863.54 and 3,897.46

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Solution

The fourth proportional to 8,579.80, 12,863.54 and 3,897.46 is: 5,843.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,579.80 : 12,863.54 = 3,897.46 : x
  2. Step 2: Convert to fraction form
    8,579.80/12,863.54 = 3,897.46/x
  3. Step 3: Cross multiply
    8,579.80x = 12,863.54 × 3,897.46
  4. Step 4: Simplify right side
    8,579.80x = 50,135,132.61
  5. Step 5: Solve for x
    x = 50,135,132.61/8,579.80
  6. Step 6: Final answer
    x = 5,843.39

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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.