Home / 8,113.44-12,171.84-2,919.36

Finding the Fourth Proportional to 8,113.44, 12,171.84 and 2,919.36

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Solution

The fourth proportional to 8,113.44, 12,171.84 and 2,919.36 is: 4,379.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,113.44 : 12,171.84 = 2,919.36 : x
  2. Step 2: Convert to fraction form
    8,113.44/12,171.84 = 2,919.36/x
  3. Step 3: Cross multiply
    8,113.44x = 12,171.84 × 2,919.36
  4. Step 4: Simplify right side
    8,113.44x = 35,533,982.82
  5. Step 5: Solve for x
    x = 35,533,982.82/8,113.44
  6. Step 6: Final answer
    x = 4,379.64

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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.