Home / 12,619.44-18,928.76-3,854

Finding the Fourth Proportional to 12,619.44, 18,928.76 and 3,854

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Solution

The fourth proportional to 12,619.44, 18,928.76 and 3,854 is: 5,780.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,619.44 : 18,928.76 = 3,854 : x
  2. Step 2: Convert to fraction form
    12,619.44/18,928.76 = 3,854/x
  3. Step 3: Cross multiply
    12,619.44x = 18,928.76 × 3,854
  4. Step 4: Simplify right side
    12,619.44x = 72,951,441.04
  5. Step 5: Solve for x
    x = 72,951,441.04/12,619.44
  6. Step 6: Final answer
    x = 5,780.88

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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.