Home / 3,431.30-5,146.89-1,091.27

Finding the Fourth Proportional to 3,431.30, 5,146.89 and 1,091.27

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Solution

The fourth proportional to 3,431.30, 5,146.89 and 1,091.27 is: 1,636.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.30 : 5,146.89 = 1,091.27 : x
  2. Step 2: Convert to fraction form
    3,431.30/5,146.89 = 1,091.27/x
  3. Step 3: Cross multiply
    3,431.30x = 5,146.89 × 1,091.27
  4. Step 4: Simplify right side
    3,431.30x = 5,616,641.82
  5. Step 5: Solve for x
    x = 5,616,641.82/3,431.30
  6. Step 6: Final answer
    x = 1,636.89

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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.