Home / 4,090.20-6,138.36-1,591.79

Finding the Fourth Proportional to 4,090.20, 6,138.36 and 1,591.79

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Solution

The fourth proportional to 4,090.20, 6,138.36 and 1,591.79 is: 2,388.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,090.20 : 6,138.36 = 1,591.79 : x
  2. Step 2: Convert to fraction form
    4,090.20/6,138.36 = 1,591.79/x
  3. Step 3: Cross multiply
    4,090.20x = 6,138.36 × 1,591.79
  4. Step 4: Simplify right side
    4,090.20x = 9,770,944.90
  5. Step 5: Solve for x
    x = 9,770,944.90/4,090.20
  6. Step 6: Final answer
    x = 2,388.86

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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.