Home / 8,132.16-12,189.86-3,199.80

Finding the Fourth Proportional to 8,132.16, 12,189.86 and 3,199.80

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Solution

The fourth proportional to 8,132.16, 12,189.86 and 3,199.80 is: 4,796.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,132.16 : 12,189.86 = 3,199.80 : x
  2. Step 2: Convert to fraction form
    8,132.16/12,189.86 = 3,199.80/x
  3. Step 3: Cross multiply
    8,132.16x = 12,189.86 × 3,199.80
  4. Step 4: Simplify right side
    8,132.16x = 39,005,114.03
  5. Step 5: Solve for x
    x = 39,005,114.03/8,132.16
  6. Step 6: Final answer
    x = 4,796.40

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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.