Home / 8,679.20-13,018.83-2,105.37

Finding the Fourth Proportional to 8,679.20, 13,018.83 and 2,105.37

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Solution

The fourth proportional to 8,679.20, 13,018.83 and 2,105.37 is: 3,158.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.20 : 13,018.83 = 2,105.37 : x
  2. Step 2: Convert to fraction form
    8,679.20/13,018.83 = 2,105.37/x
  3. Step 3: Cross multiply
    8,679.20x = 13,018.83 × 2,105.37
  4. Step 4: Simplify right side
    8,679.20x = 27,409,454.12
  5. Step 5: Solve for x
    x = 27,409,454.12/8,679.20
  6. Step 6: Final answer
    x = 3,158.06

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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.