Home / 8,619.08-12,928.90-2,379.56

Finding the Fourth Proportional to 8,619.08, 12,928.90 and 2,379.56

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Solution

The fourth proportional to 8,619.08, 12,928.90 and 2,379.56 is: 3,569.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.08 : 12,928.90 = 2,379.56 : x
  2. Step 2: Convert to fraction form
    8,619.08/12,928.90 = 2,379.56/x
  3. Step 3: Cross multiply
    8,619.08x = 12,928.90 × 2,379.56
  4. Step 4: Simplify right side
    8,619.08x = 30,765,093.28
  5. Step 5: Solve for x
    x = 30,765,093.28/8,619.08
  6. Step 6: Final answer
    x = 3,569.42

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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.