Home / 3,131.09-4,696.13-1,157.65

Finding the Fourth Proportional to 3,131.09, 4,696.13 and 1,157.65

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Solution

The fourth proportional to 3,131.09, 4,696.13 and 1,157.65 is: 1,736.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.09 : 4,696.13 = 1,157.65 : x
  2. Step 2: Convert to fraction form
    3,131.09/4,696.13 = 1,157.65/x
  3. Step 3: Cross multiply
    3,131.09x = 4,696.13 × 1,157.65
  4. Step 4: Simplify right side
    3,131.09x = 5,436,447.98
  5. Step 5: Solve for x
    x = 5,436,447.98/3,131.09
  6. Step 6: Final answer
    x = 1,736.28

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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.