Home / 3,930.26-5,395.35-3,893.36

Finding the Fourth Proportional to 3,930.26, 5,395.35 and 3,893.36

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Solution

The fourth proportional to 3,930.26, 5,395.35 and 3,893.36 is: 5,344.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.26 : 5,395.35 = 3,893.36 : x
  2. Step 2: Convert to fraction form
    3,930.26/5,395.35 = 3,893.36/x
  3. Step 3: Cross multiply
    3,930.26x = 5,395.35 × 3,893.36
  4. Step 4: Simplify right side
    3,930.26x = 21,006,012.90
  5. Step 5: Solve for x
    x = 21,006,012.90/3,930.26
  6. Step 6: Final answer
    x = 5,344.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.