Home / 8,118.56-12,166.64-3,725.28

Finding the Fourth Proportional to 8,118.56, 12,166.64 and 3,725.28

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Solution

The fourth proportional to 8,118.56, 12,166.64 and 3,725.28 is: 5,582.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.56 : 12,166.64 = 3,725.28 : x
  2. Step 2: Convert to fraction form
    8,118.56/12,166.64 = 3,725.28/x
  3. Step 3: Cross multiply
    8,118.56x = 12,166.64 × 3,725.28
  4. Step 4: Simplify right side
    8,118.56x = 45,324,140.66
  5. Step 5: Solve for x
    x = 45,324,140.66/8,118.56
  6. Step 6: Final answer
    x = 5,582.78

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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.