Home / 3,121.30-4,684.11-1,175.14

Finding the Fourth Proportional to 3,121.30, 4,684.11 and 1,175.14

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Solution

The fourth proportional to 3,121.30, 4,684.11 and 1,175.14 is: 1,763.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.30 : 4,684.11 = 1,175.14 : x
  2. Step 2: Convert to fraction form
    3,121.30/4,684.11 = 1,175.14/x
  3. Step 3: Cross multiply
    3,121.30x = 4,684.11 × 1,175.14
  4. Step 4: Simplify right side
    3,121.30x = 5,504,485.03
  5. Step 5: Solve for x
    x = 5,504,485.03/3,121.30
  6. Step 6: Final answer
    x = 1,763.52

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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.