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Finding the Fourth Proportional to 4,886.82, 6,743.97 and 2,790.90

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Solution

The fourth proportional to 4,886.82, 6,743.97 and 2,790.90 is: 3,851.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,886.82 : 6,743.97 = 2,790.90 : x
  2. Step 2: Convert to fraction form
    4,886.82/6,743.97 = 2,790.90/x
  3. Step 3: Cross multiply
    4,886.82x = 6,743.97 × 2,790.90
  4. Step 4: Simplify right side
    4,886.82x = 18,821,745.87
  5. Step 5: Solve for x
    x = 18,821,745.87/4,886.82
  6. Step 6: Final answer
    x = 3,851.53

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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.