Home / 3,917.60-5,406.57-2,149.37

Finding the Fourth Proportional to 3,917.60, 5,406.57 and 2,149.37

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Solution

The fourth proportional to 3,917.60, 5,406.57 and 2,149.37 is: 2,966.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.60 : 5,406.57 = 2,149.37 : x
  2. Step 2: Convert to fraction form
    3,917.60/5,406.57 = 2,149.37/x
  3. Step 3: Cross multiply
    3,917.60x = 5,406.57 × 2,149.37
  4. Step 4: Simplify right side
    3,917.60x = 11,620,692.33
  5. Step 5: Solve for x
    x = 11,620,692.33/3,917.60
  6. Step 6: Final answer
    x = 2,966.28

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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.