Home / 3,431.26-5,146.98-1,091.28

Finding the Fourth Proportional to 3,431.26, 5,146.98 and 1,091.28

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Solution

The fourth proportional to 3,431.26, 5,146.98 and 1,091.28 is: 1,636.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.26 : 5,146.98 = 1,091.28 : x
  2. Step 2: Convert to fraction form
    3,431.26/5,146.98 = 1,091.28/x
  3. Step 3: Cross multiply
    3,431.26x = 5,146.98 × 1,091.28
  4. Step 4: Simplify right side
    3,431.26x = 5,616,796.33
  5. Step 5: Solve for x
    x = 5,616,796.33/3,431.26
  6. Step 6: Final answer
    x = 1,636.95

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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.