Home / 3,115.32-4,672.97-923.88

Finding the Fourth Proportional to 3,115.32, 4,672.97 and 923.88

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Solution

The fourth proportional to 3,115.32, 4,672.97 and 923.88 is: 1,385.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.32 : 4,672.97 = 923.88 : x
  2. Step 2: Convert to fraction form
    3,115.32/4,672.97 = 923.88/x
  3. Step 3: Cross multiply
    3,115.32x = 4,672.97 × 923.88
  4. Step 4: Simplify right side
    3,115.32x = 4,317,258.90
  5. Step 5: Solve for x
    x = 4,317,258.90/3,115.32
  6. Step 6: Final answer
    x = 1,385.82

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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.