Home / 2,114.51-3,168.92-1,189.69

Finding the Fourth Proportional to 2,114.51, 3,168.92 and 1,189.69

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Solution

The fourth proportional to 2,114.51, 3,168.92 and 1,189.69 is: 1,782.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.51 : 3,168.92 = 1,189.69 : x
  2. Step 2: Convert to fraction form
    2,114.51/3,168.92 = 1,189.69/x
  3. Step 3: Cross multiply
    2,114.51x = 3,168.92 × 1,189.69
  4. Step 4: Simplify right side
    2,114.51x = 3,770,027.49
  5. Step 5: Solve for x
    x = 3,770,027.49/2,114.51
  6. Step 6: Final answer
    x = 1,782.94

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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.