Home / 3,917.47-5,405.93-2,149.04

Finding the Fourth Proportional to 3,917.47, 5,405.93 and 2,149.04

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Solution

The fourth proportional to 3,917.47, 5,405.93 and 2,149.04 is: 2,965.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.47 : 5,405.93 = 2,149.04 : x
  2. Step 2: Convert to fraction form
    3,917.47/5,405.93 = 2,149.04/x
  3. Step 3: Cross multiply
    3,917.47x = 5,405.93 × 2,149.04
  4. Step 4: Simplify right side
    3,917.47x = 11,617,540.23
  5. Step 5: Solve for x
    x = 11,617,540.23/3,917.47
  6. Step 6: Final answer
    x = 2,965.57

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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.