Home / 3,845.05-5,306.09-2,143.58

Finding the Fourth Proportional to 3,845.05, 5,306.09 and 2,143.58

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Solution

The fourth proportional to 3,845.05, 5,306.09 and 2,143.58 is: 2,958.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,845.05 : 5,306.09 = 2,143.58 : x
  2. Step 2: Convert to fraction form
    3,845.05/5,306.09 = 2,143.58/x
  3. Step 3: Cross multiply
    3,845.05x = 5,306.09 × 2,143.58
  4. Step 4: Simplify right side
    3,845.05x = 11,373,991.15
  5. Step 5: Solve for x
    x = 11,373,991.15/3,845.05
  6. Step 6: Final answer
    x = 2,958.09

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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.