Home / 3,131.06-4,696.91-1,157.21

Finding the Fourth Proportional to 3,131.06, 4,696.91 and 1,157.21

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Solution

The fourth proportional to 3,131.06, 4,696.91 and 1,157.21 is: 1,735.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.06 : 4,696.91 = 1,157.21 : x
  2. Step 2: Convert to fraction form
    3,131.06/4,696.91 = 1,157.21/x
  3. Step 3: Cross multiply
    3,131.06x = 4,696.91 × 1,157.21
  4. Step 4: Simplify right side
    3,131.06x = 5,435,299.56
  5. Step 5: Solve for x
    x = 5,435,299.56/3,131.06
  6. Step 6: Final answer
    x = 1,735.93

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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.