Home / 3,138.72-4,701.24-2,863.68

Finding the Fourth Proportional to 3,138.72, 4,701.24 and 2,863.68

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Solution

The fourth proportional to 3,138.72, 4,701.24 and 2,863.68 is: 4,289.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.72 : 4,701.24 = 2,863.68 : x
  2. Step 2: Convert to fraction form
    3,138.72/4,701.24 = 2,863.68/x
  3. Step 3: Cross multiply
    3,138.72x = 4,701.24 × 2,863.68
  4. Step 4: Simplify right side
    3,138.72x = 13,462,846.96
  5. Step 5: Solve for x
    x = 13,462,846.96/3,138.72
  6. Step 6: Final answer
    x = 4,289.28

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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.