Home / 8,679.39-13,018.97-2,105.63

Finding the Fourth Proportional to 8,679.39, 13,018.97 and 2,105.63

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Solution

The fourth proportional to 8,679.39, 13,018.97 and 2,105.63 is: 3,158.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.39 : 13,018.97 = 2,105.63 : x
  2. Step 2: Convert to fraction form
    8,679.39/13,018.97 = 2,105.63/x
  3. Step 3: Cross multiply
    8,679.39x = 13,018.97 × 2,105.63
  4. Step 4: Simplify right side
    8,679.39x = 27,413,133.80
  5. Step 5: Solve for x
    x = 27,413,133.80/8,679.39
  6. Step 6: Final answer
    x = 3,158.42

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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.