Home / 3,190.70-4,790.20-2,460.80

Finding the Fourth Proportional to 3,190.70, 4,790.20 and 2,460.80

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Solution

The fourth proportional to 3,190.70, 4,790.20 and 2,460.80 is: 3,694.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190.70 : 4,790.20 = 2,460.80 : x
  2. Step 2: Convert to fraction form
    3,190.70/4,790.20 = 2,460.80/x
  3. Step 3: Cross multiply
    3,190.70x = 4,790.20 × 2,460.80
  4. Step 4: Simplify right side
    3,190.70x = 11,787,724.16
  5. Step 5: Solve for x
    x = 11,787,724.16/3,190.70
  6. Step 6: Final answer
    x = 3,694.40

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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.