Home / 8,679.30-13,019.03-2,105.54

Finding the Fourth Proportional to 8,679.30, 13,019.03 and 2,105.54

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Solution

The fourth proportional to 8,679.30, 13,019.03 and 2,105.54 is: 3,158.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.30 : 13,019.03 = 2,105.54 : x
  2. Step 2: Convert to fraction form
    8,679.30/13,019.03 = 2,105.54/x
  3. Step 3: Cross multiply
    8,679.30x = 13,019.03 × 2,105.54
  4. Step 4: Simplify right side
    8,679.30x = 27,412,088.43
  5. Step 5: Solve for x
    x = 27,412,088.43/8,679.30
  6. Step 6: Final answer
    x = 3,158.33

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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.