Home / 8,119.31-12,179.37-2,276.51

Finding the Fourth Proportional to 8,119.31, 12,179.37 and 2,276.51

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Solution

The fourth proportional to 8,119.31, 12,179.37 and 2,276.51 is: 3,414.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.31 : 12,179.37 = 2,276.51 : x
  2. Step 2: Convert to fraction form
    8,119.31/12,179.37 = 2,276.51/x
  3. Step 3: Cross multiply
    8,119.31x = 12,179.37 × 2,276.51
  4. Step 4: Simplify right side
    8,119.31x = 27,726,457.60
  5. Step 5: Solve for x
    x = 27,726,457.60/8,119.31
  6. Step 6: Final answer
    x = 3,414.88

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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.