Home / 3,438.55-4,743.66-2,111.47

Finding the Fourth Proportional to 3,438.55, 4,743.66 and 2,111.47

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Solution

The fourth proportional to 3,438.55, 4,743.66 and 2,111.47 is: 2,912.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.55 : 4,743.66 = 2,111.47 : x
  2. Step 2: Convert to fraction form
    3,438.55/4,743.66 = 2,111.47/x
  3. Step 3: Cross multiply
    3,438.55x = 4,743.66 × 2,111.47
  4. Step 4: Simplify right side
    3,438.55x = 10,016,091.84
  5. Step 5: Solve for x
    x = 10,016,091.84/3,438.55
  6. Step 6: Final answer
    x = 2,912.88

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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.