Home / 8,113.20-12,169.80-2,919.48

Finding the Fourth Proportional to 8,113.20, 12,169.80 and 2,919.48

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Solution

The fourth proportional to 8,113.20, 12,169.80 and 2,919.48 is: 4,379.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,113.20 : 12,169.80 = 2,919.48 : x
  2. Step 2: Convert to fraction form
    8,113.20/12,169.80 = 2,919.48/x
  3. Step 3: Cross multiply
    8,113.20x = 12,169.80 × 2,919.48
  4. Step 4: Simplify right side
    8,113.20x = 35,529,487.70
  5. Step 5: Solve for x
    x = 35,529,487.70/8,113.20
  6. Step 6: Final answer
    x = 4,379.22

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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.