Home / 5,426.70-8,136.40-2,138.10

Finding the Fourth Proportional to 5,426.70, 8,136.40 and 2,138.10

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Solution

The fourth proportional to 5,426.70, 8,136.40 and 2,138.10 is: 3,205.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,426.70 : 8,136.40 = 2,138.10 : x
  2. Step 2: Convert to fraction form
    5,426.70/8,136.40 = 2,138.10/x
  3. Step 3: Cross multiply
    5,426.70x = 8,136.40 × 2,138.10
  4. Step 4: Simplify right side
    5,426.70x = 17,396,436.84
  5. Step 5: Solve for x
    x = 17,396,436.84/5,426.70
  6. Step 6: Final answer
    x = 3,205.71

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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.