Home / 8,169.20-12,247.80-2,619.36

Finding the Fourth Proportional to 8,169.20, 12,247.80 and 2,619.36

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Solution

The fourth proportional to 8,169.20, 12,247.80 and 2,619.36 is: 3,927.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,169.20 : 12,247.80 = 2,619.36 : x
  2. Step 2: Convert to fraction form
    8,169.20/12,247.80 = 2,619.36/x
  3. Step 3: Cross multiply
    8,169.20x = 12,247.80 × 2,619.36
  4. Step 4: Simplify right side
    8,169.20x = 32,081,397.41
  5. Step 5: Solve for x
    x = 32,081,397.41/8,169.20
  6. Step 6: Final answer
    x = 3,927.12

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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.