Home / 3,435.87-5,157.45-2,138.25

Finding the Fourth Proportional to 3,435.87, 5,157.45 and 2,138.25

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Solution

The fourth proportional to 3,435.87, 5,157.45 and 2,138.25 is: 3,209.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,435.87 : 5,157.45 = 2,138.25 : x
  2. Step 2: Convert to fraction form
    3,435.87/5,157.45 = 2,138.25/x
  3. Step 3: Cross multiply
    3,435.87x = 5,157.45 × 2,138.25
  4. Step 4: Simplify right side
    3,435.87x = 11,027,917.46
  5. Step 5: Solve for x
    x = 11,027,917.46/3,435.87
  6. Step 6: Final answer
    x = 3,209.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.