Home / 1,791.32-2,469.60-1,231.58

Finding the Fourth Proportional to 1,791.32, 2,469.60 and 1,231.58

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Solution

The fourth proportional to 1,791.32, 2,469.60 and 1,231.58 is: 1,697.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,791.32 : 2,469.60 = 1,231.58 : x
  2. Step 2: Convert to fraction form
    1,791.32/2,469.60 = 1,231.58/x
  3. Step 3: Cross multiply
    1,791.32x = 2,469.60 × 1,231.58
  4. Step 4: Simplify right side
    1,791.32x = 3,041,509.97
  5. Step 5: Solve for x
    x = 3,041,509.97/1,791.32
  6. Step 6: Final answer
    x = 1,697.92

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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.