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Finding the Fourth Proportional to 2,850.78, 4,267.91 and 1,751.81

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Solution

The fourth proportional to 2,850.78, 4,267.91 and 1,751.81 is: 2,622.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,850.78 : 4,267.91 = 1,751.81 : x
  2. Step 2: Convert to fraction form
    2,850.78/4,267.91 = 1,751.81/x
  3. Step 3: Cross multiply
    2,850.78x = 4,267.91 × 1,751.81
  4. Step 4: Simplify right side
    2,850.78x = 7,476,537.32
  5. Step 5: Solve for x
    x = 7,476,537.32/2,850.78
  6. Step 6: Final answer
    x = 2,622.63

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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.