Home / 2,109.10-3,163.67-938.83

Finding the Fourth Proportional to 2,109.10, 3,163.67 and 938.83

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Solution

The fourth proportional to 2,109.10, 3,163.67 and 938.83 is: 1,408.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,109.10 : 3,163.67 = 938.83 : x
  2. Step 2: Convert to fraction form
    2,109.10/3,163.67 = 938.83/x
  3. Step 3: Cross multiply
    2,109.10x = 3,163.67 × 938.83
  4. Step 4: Simplify right side
    2,109.10x = 2,970,148.31
  5. Step 5: Solve for x
    x = 2,970,148.31/2,109.10
  6. Step 6: Final answer
    x = 1,408.25

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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.