Home / 3,854.89-5,319.74-2,086.53

Finding the Fourth Proportional to 3,854.89, 5,319.74 and 2,086.53

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Solution

The fourth proportional to 3,854.89, 5,319.74 and 2,086.53 is: 2,879.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,854.89 : 5,319.74 = 2,086.53 : x
  2. Step 2: Convert to fraction form
    3,854.89/5,319.74 = 2,086.53/x
  3. Step 3: Cross multiply
    3,854.89x = 5,319.74 × 2,086.53
  4. Step 4: Simplify right side
    3,854.89x = 11,099,797.10
  5. Step 5: Solve for x
    x = 11,099,797.10/3,854.89
  6. Step 6: Final answer
    x = 2,879.41

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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.