Home / 8,412.20-12,619.08-2,863.68

Finding the Fourth Proportional to 8,412.20, 12,619.08 and 2,863.68

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Solution

The fourth proportional to 8,412.20, 12,619.08 and 2,863.68 is: 4,295.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,412.20 : 12,619.08 = 2,863.68 : x
  2. Step 2: Convert to fraction form
    8,412.20/12,619.08 = 2,863.68/x
  3. Step 3: Cross multiply
    8,412.20x = 12,619.08 × 2,863.68
  4. Step 4: Simplify right side
    8,412.20x = 36,137,007.01
  5. Step 5: Solve for x
    x = 36,137,007.01/8,412.20
  6. Step 6: Final answer
    x = 4,295.79

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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.