Home / 3,936.60-5,397.23-3,866.33

Finding the Fourth Proportional to 3,936.60, 5,397.23 and 3,866.33

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Solution

The fourth proportional to 3,936.60, 5,397.23 and 3,866.33 is: 5,300.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.60 : 5,397.23 = 3,866.33 : x
  2. Step 2: Convert to fraction form
    3,936.60/5,397.23 = 3,866.33/x
  3. Step 3: Cross multiply
    3,936.60x = 5,397.23 × 3,866.33
  4. Step 4: Simplify right side
    3,936.60x = 20,867,495.42
  5. Step 5: Solve for x
    x = 20,867,495.42/3,936.60
  6. Step 6: Final answer
    x = 5,300.89

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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.