Home / 3,911.74-5,398.31-2,143.44

Finding the Fourth Proportional to 3,911.74, 5,398.31 and 2,143.44

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Solution

The fourth proportional to 3,911.74, 5,398.31 and 2,143.44 is: 2,958.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.74 : 5,398.31 = 2,143.44 : x
  2. Step 2: Convert to fraction form
    3,911.74/5,398.31 = 2,143.44/x
  3. Step 3: Cross multiply
    3,911.74x = 5,398.31 × 2,143.44
  4. Step 4: Simplify right side
    3,911.74x = 11,570,953.59
  5. Step 5: Solve for x
    x = 11,570,953.59/3,911.74
  6. Step 6: Final answer
    x = 2,958.01

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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.