Home / 3,100.36-4,276.92-2,105.68

Finding the Fourth Proportional to 3,100.36, 4,276.92 and 2,105.68

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Solution

The fourth proportional to 3,100.36, 4,276.92 and 2,105.68 is: 2,904.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,100.36 : 4,276.92 = 2,105.68 : x
  2. Step 2: Convert to fraction form
    3,100.36/4,276.92 = 2,105.68/x
  3. Step 3: Cross multiply
    3,100.36x = 4,276.92 × 2,105.68
  4. Step 4: Simplify right side
    3,100.36x = 9,005,824.91
  5. Step 5: Solve for x
    x = 9,005,824.91/3,100.36
  6. Step 6: Final answer
    x = 2,904.77

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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.