Home / 3,431.52-5,145.75-1,091.09

Finding the Fourth Proportional to 3,431.52, 5,145.75 and 1,091.09

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Solution

The fourth proportional to 3,431.52, 5,145.75 and 1,091.09 is: 1,636.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.52 : 5,145.75 = 1,091.09 : x
  2. Step 2: Convert to fraction form
    3,431.52/5,145.75 = 1,091.09/x
  3. Step 3: Cross multiply
    3,431.52x = 5,145.75 × 1,091.09
  4. Step 4: Simplify right side
    3,431.52x = 5,614,450.64
  5. Step 5: Solve for x
    x = 5,614,450.64/3,431.52
  6. Step 6: Final answer
    x = 1,636.14

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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.