Home / 3,893.83-5,840.43-1,428.55

Finding the Fourth Proportional to 3,893.83, 5,840.43 and 1,428.55

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Solution

The fourth proportional to 3,893.83, 5,840.43 and 1,428.55 is: 2,142.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,893.83 : 5,840.43 = 1,428.55 : x
  2. Step 2: Convert to fraction form
    3,893.83/5,840.43 = 1,428.55/x
  3. Step 3: Cross multiply
    3,893.83x = 5,840.43 × 1,428.55
  4. Step 4: Simplify right side
    3,893.83x = 8,343,346.28
  5. Step 5: Solve for x
    x = 8,343,346.28/3,893.83
  6. Step 6: Final answer
    x = 2,142.71

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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.