Home / 8,149.08-12,219.42-3,987.24

Finding the Fourth Proportional to 8,149.08, 12,219.42 and 3,987.24

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Solution

The fourth proportional to 8,149.08, 12,219.42 and 3,987.24 is: 5,978.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,149.08 : 12,219.42 = 3,987.24 : x
  2. Step 2: Convert to fraction form
    8,149.08/12,219.42 = 3,987.24/x
  3. Step 3: Cross multiply
    8,149.08x = 12,219.42 × 3,987.24
  4. Step 4: Simplify right side
    8,149.08x = 48,721,760.20
  5. Step 5: Solve for x
    x = 48,721,760.20/8,149.08
  6. Step 6: Final answer
    x = 5,978.80

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1.5x scale

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.