Home / 2,747.81-4,123.92-1,431.96

Finding the Fourth Proportional to 2,747.81, 4,123.92 and 1,431.96

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Solution

The fourth proportional to 2,747.81, 4,123.92 and 1,431.96 is: 2,149.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,747.81 : 4,123.92 = 1,431.96 : x
  2. Step 2: Convert to fraction form
    2,747.81/4,123.92 = 1,431.96/x
  3. Step 3: Cross multiply
    2,747.81x = 4,123.92 × 1,431.96
  4. Step 4: Simplify right side
    2,747.81x = 5,905,288.48
  5. Step 5: Solve for x
    x = 5,905,288.48/2,747.81
  6. Step 6: Final answer
    x = 2,149.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.