Home / 5,435.90-8,138.40-3,581.42

Finding the Fourth Proportional to 5,435.90, 8,138.40 and 3,581.42

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Solution

The fourth proportional to 5,435.90, 8,138.40 and 3,581.42 is: 5,361.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,435.90 : 8,138.40 = 3,581.42 : x
  2. Step 2: Convert to fraction form
    5,435.90/8,138.40 = 3,581.42/x
  3. Step 3: Cross multiply
    5,435.90x = 8,138.40 × 3,581.42
  4. Step 4: Simplify right side
    5,435.90x = 29,147,028.53
  5. Step 5: Solve for x
    x = 29,147,028.53/5,435.90
  6. Step 6: Final answer
    x = 5,361.95

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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.