Home / 3,934.36-5,429.10-2,255.68

Finding the Fourth Proportional to 3,934.36, 5,429.10 and 2,255.68

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Solution

The fourth proportional to 3,934.36, 5,429.10 and 2,255.68 is: 3,112.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,934.36 : 5,429.10 = 2,255.68 : x
  2. Step 2: Convert to fraction form
    3,934.36/5,429.10 = 2,255.68/x
  3. Step 3: Cross multiply
    3,934.36x = 5,429.10 × 2,255.68
  4. Step 4: Simplify right side
    3,934.36x = 12,246,312.29
  5. Step 5: Solve for x
    x = 12,246,312.29/3,934.36
  6. Step 6: Final answer
    x = 3,112.66

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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.