Home / 3,912.22-5,398.86-2,143.81

Finding the Fourth Proportional to 3,912.22, 5,398.86 and 2,143.81

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Solution

The fourth proportional to 3,912.22, 5,398.86 and 2,143.81 is: 2,958.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.22 : 5,398.86 = 2,143.81 : x
  2. Step 2: Convert to fraction form
    3,912.22/5,398.86 = 2,143.81/x
  3. Step 3: Cross multiply
    3,912.22x = 5,398.86 × 2,143.81
  4. Step 4: Simplify right side
    3,912.22x = 11,574,130.06
  5. Step 5: Solve for x
    x = 11,574,130.06/3,912.22
  6. Step 6: Final answer
    x = 2,958.46

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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.