Home / 3,105.20-4,649.70-2,451.80

Finding the Fourth Proportional to 3,105.20, 4,649.70 and 2,451.80

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Solution

The fourth proportional to 3,105.20, 4,649.70 and 2,451.80 is: 3,671.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.20 : 4,649.70 = 2,451.80 : x
  2. Step 2: Convert to fraction form
    3,105.20/4,649.70 = 2,451.80/x
  3. Step 3: Cross multiply
    3,105.20x = 4,649.70 × 2,451.80
  4. Step 4: Simplify right side
    3,105.20x = 11,400,134.46
  5. Step 5: Solve for x
    x = 11,400,134.46/3,105.20
  6. Step 6: Final answer
    x = 3,671.30

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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.