Home / 8,389.90-12,584.77-2,149.86

Finding the Fourth Proportional to 8,389.90, 12,584.77 and 2,149.86

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Solution

The fourth proportional to 8,389.90, 12,584.77 and 2,149.86 is: 3,224.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,389.90 : 12,584.77 = 2,149.86 : x
  2. Step 2: Convert to fraction form
    8,389.90/12,584.77 = 2,149.86/x
  3. Step 3: Cross multiply
    8,389.90x = 12,584.77 × 2,149.86
  4. Step 4: Simplify right side
    8,389.90x = 27,055,464.66
  5. Step 5: Solve for x
    x = 27,055,464.66/8,389.90
  6. Step 6: Final answer
    x = 3,224.77

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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.