Home / 3,845.12-5,768.51-2,091.87

Finding the Fourth Proportional to 3,845.12, 5,768.51 and 2,091.87

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Solution

The fourth proportional to 3,845.12, 5,768.51 and 2,091.87 is: 3,138.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,845.12 : 5,768.51 = 2,091.87 : x
  2. Step 2: Convert to fraction form
    3,845.12/5,768.51 = 2,091.87/x
  3. Step 3: Cross multiply
    3,845.12x = 5,768.51 × 2,091.87
  4. Step 4: Simplify right side
    3,845.12x = 12,066,962.55
  5. Step 5: Solve for x
    x = 12,066,962.55/3,845.12
  6. Step 6: Final answer
    x = 3,138.26

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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.