Home / 3,109.22-4,290.68-1,711.96

Finding the Fourth Proportional to 3,109.22, 4,290.68 and 1,711.96

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Solution

The fourth proportional to 3,109.22, 4,290.68 and 1,711.96 is: 2,362.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.22 : 4,290.68 = 1,711.96 : x
  2. Step 2: Convert to fraction form
    3,109.22/4,290.68 = 1,711.96/x
  3. Step 3: Cross multiply
    3,109.22x = 4,290.68 × 1,711.96
  4. Step 4: Simplify right side
    3,109.22x = 7,345,472.53
  5. Step 5: Solve for x
    x = 7,345,472.53/3,109.22
  6. Step 6: Final answer
    x = 2,362.48

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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.