Home / 3,408.04-5,107.21-1,431.54

Finding the Fourth Proportional to 3,408.04, 5,107.21 and 1,431.54

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Solution

The fourth proportional to 3,408.04, 5,107.21 and 1,431.54 is: 2,145.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,408.04 : 5,107.21 = 1,431.54 : x
  2. Step 2: Convert to fraction form
    3,408.04/5,107.21 = 1,431.54/x
  3. Step 3: Cross multiply
    3,408.04x = 5,107.21 × 1,431.54
  4. Step 4: Simplify right side
    3,408.04x = 7,311,175.40
  5. Step 5: Solve for x
    x = 7,311,175.40/3,408.04
  6. Step 6: Final answer
    x = 2,145.27

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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.