Home / 3,150.60-4,725.90-1,921.80

Finding the Fourth Proportional to 3,150.60, 4,725.90 and 1,921.80

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Solution

The fourth proportional to 3,150.60, 4,725.90 and 1,921.80 is: 2,882.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,150.60 : 4,725.90 = 1,921.80 : x
  2. Step 2: Convert to fraction form
    3,150.60/4,725.90 = 1,921.80/x
  3. Step 3: Cross multiply
    3,150.60x = 4,725.90 × 1,921.80
  4. Step 4: Simplify right side
    3,150.60x = 9,082,234.62
  5. Step 5: Solve for x
    x = 9,082,234.62/3,150.60
  6. Step 6: Final answer
    x = 2,882.70

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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.