Home / 6,119.60-9,179.40-3,930.80

Finding the Fourth Proportional to 6,119.60, 9,179.40 and 3,930.80

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Solution

The fourth proportional to 6,119.60, 9,179.40 and 3,930.80 is: 5,896.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,119.60 : 9,179.40 = 3,930.80 : x
  2. Step 2: Convert to fraction form
    6,119.60/9,179.40 = 3,930.80/x
  3. Step 3: Cross multiply
    6,119.60x = 9,179.40 × 3,930.80
  4. Step 4: Simplify right side
    6,119.60x = 36,082,385.52
  5. Step 5: Solve for x
    x = 36,082,385.52/6,119.60
  6. Step 6: Final answer
    x = 5,896.20

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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.