Home / 5,380.12-8,076.68-3,191.32

Finding the Fourth Proportional to 5,380.12, 8,076.68 and 3,191.32

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Solution

The fourth proportional to 5,380.12, 8,076.68 and 3,191.32 is: 4,790.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,380.12 : 8,076.68 = 3,191.32 : x
  2. Step 2: Convert to fraction form
    5,380.12/8,076.68 = 3,191.32/x
  3. Step 3: Cross multiply
    5,380.12x = 8,076.68 × 3,191.32
  4. Step 4: Simplify right side
    5,380.12x = 25,775,270.42
  5. Step 5: Solve for x
    x = 25,775,270.42/5,380.12
  6. Step 6: Final answer
    x = 4,790.84

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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.