Home / 3,091.44-4,265.25-1,912.89

Finding the Fourth Proportional to 3,091.44, 4,265.25 and 1,912.89

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Solution

The fourth proportional to 3,091.44, 4,265.25 and 1,912.89 is: 2,639.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,091.44 : 4,265.25 = 1,912.89 : x
  2. Step 2: Convert to fraction form
    3,091.44/4,265.25 = 1,912.89/x
  3. Step 3: Cross multiply
    3,091.44x = 4,265.25 × 1,912.89
  4. Step 4: Simplify right side
    3,091.44x = 8,158,954.07
  5. Step 5: Solve for x
    x = 8,158,954.07/3,091.44
  6. Step 6: Final answer
    x = 2,639.21

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1.5x scale

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.