Home / 8,131.61-12,199.44-3,752.15

Finding the Fourth Proportional to 8,131.61, 12,199.44 and 3,752.15

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Solution

The fourth proportional to 8,131.61, 12,199.44 and 3,752.15 is: 5,629.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,131.61 : 12,199.44 = 3,752.15 : x
  2. Step 2: Convert to fraction form
    8,131.61/12,199.44 = 3,752.15/x
  3. Step 3: Cross multiply
    8,131.61x = 12,199.44 × 3,752.15
  4. Step 4: Simplify right side
    8,131.61x = 45,774,067.80
  5. Step 5: Solve for x
    x = 45,774,067.80/8,131.61
  6. Step 6: Final answer
    x = 5,629.16

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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.