Home / 1,367.72-2,051.60-1,161.78

Finding the Fourth Proportional to 1,367.72, 2,051.60 and 1,161.78

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Solution

The fourth proportional to 1,367.72, 2,051.60 and 1,161.78 is: 1,742.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,367.72 : 2,051.60 = 1,161.78 : x
  2. Step 2: Convert to fraction form
    1,367.72/2,051.60 = 1,161.78/x
  3. Step 3: Cross multiply
    1,367.72x = 2,051.60 × 1,161.78
  4. Step 4: Simplify right side
    1,367.72x = 2,383,507.85
  5. Step 5: Solve for x
    x = 2,383,507.85/1,367.72
  6. Step 6: Final answer
    x = 1,742.69

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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.