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Finding the Fourth Proportional to 2,550.78, 3,820.50 and 2,058.66

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Solution

The fourth proportional to 2,550.78, 3,820.50 and 2,058.66 is: 3,083.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,550.78 : 3,820.50 = 2,058.66 : x
  2. Step 2: Convert to fraction form
    2,550.78/3,820.50 = 2,058.66/x
  3. Step 3: Cross multiply
    2,550.78x = 3,820.50 × 2,058.66
  4. Step 4: Simplify right side
    2,550.78x = 7,865,110.53
  5. Step 5: Solve for x
    x = 7,865,110.53/2,550.78
  6. Step 6: Final answer
    x = 3,083.41

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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.