Home / 3,918.27-5,407.23-2,149.89

Finding the Fourth Proportional to 3,918.27, 5,407.23 and 2,149.89

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Solution

The fourth proportional to 3,918.27, 5,407.23 and 2,149.89 is: 2,966.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.27 : 5,407.23 = 2,149.89 : x
  2. Step 2: Convert to fraction form
    3,918.27/5,407.23 = 2,149.89/x
  3. Step 3: Cross multiply
    3,918.27x = 5,407.23 × 2,149.89
  4. Step 4: Simplify right side
    3,918.27x = 11,624,949.70
  5. Step 5: Solve for x
    x = 11,624,949.70/3,918.27
  6. Step 6: Final answer
    x = 2,966.86

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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.