Home / 8,920.08-13,379.60-2,679.96

Finding the Fourth Proportional to 8,920.08, 13,379.60 and 2,679.96

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Solution

The fourth proportional to 8,920.08, 13,379.60 and 2,679.96 is: 4,019.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,920.08 : 13,379.60 = 2,679.96 : x
  2. Step 2: Convert to fraction form
    8,920.08/13,379.60 = 2,679.96/x
  3. Step 3: Cross multiply
    8,920.08x = 13,379.60 × 2,679.96
  4. Step 4: Simplify right side
    8,920.08x = 35,856,749.34
  5. Step 5: Solve for x
    x = 35,856,749.34/8,920.08
  6. Step 6: Final answer
    x = 4,019.78

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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.