Home / 2,109.23-3,161.11-1,134.19

Finding the Fourth Proportional to 2,109.23, 3,161.11 and 1,134.19

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Solution

The fourth proportional to 2,109.23, 3,161.11 and 1,134.19 is: 1,699.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,109.23 : 3,161.11 = 1,134.19 : x
  2. Step 2: Convert to fraction form
    2,109.23/3,161.11 = 1,134.19/x
  3. Step 3: Cross multiply
    2,109.23x = 3,161.11 × 1,134.19
  4. Step 4: Simplify right side
    2,109.23x = 3,585,299.35
  5. Step 5: Solve for x
    x = 3,585,299.35/2,109.23
  6. Step 6: Final answer
    x = 1,699.81

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1.5x scale

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.