Home / 3,105.20-4,291.98-2,729.36

Finding the Fourth Proportional to 3,105.20, 4,291.98 and 2,729.36

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Solution

The fourth proportional to 3,105.20, 4,291.98 and 2,729.36 is: 3,772.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.20 : 4,291.98 = 2,729.36 : x
  2. Step 2: Convert to fraction form
    3,105.20/4,291.98 = 2,729.36/x
  3. Step 3: Cross multiply
    3,105.20x = 4,291.98 × 2,729.36
  4. Step 4: Simplify right side
    3,105.20x = 11,714,358.53
  5. Step 5: Solve for x
    x = 11,714,358.53/3,105.20
  6. Step 6: Final answer
    x = 3,772.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.