Home / 3,911.66-5,398.18-2,143.44

Finding the Fourth Proportional to 3,911.66, 5,398.18 and 2,143.44

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Solution

The fourth proportional to 3,911.66, 5,398.18 and 2,143.44 is: 2,958.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.66 : 5,398.18 = 2,143.44 : x
  2. Step 2: Convert to fraction form
    3,911.66/5,398.18 = 2,143.44/x
  3. Step 3: Cross multiply
    3,911.66x = 5,398.18 × 2,143.44
  4. Step 4: Simplify right side
    3,911.66x = 11,570,674.94
  5. Step 5: Solve for x
    x = 11,570,674.94/3,911.66
  6. Step 6: Final answer
    x = 2,958.00

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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.