Home / 5,424.28-8,136.42-1,961.56

Finding the Fourth Proportional to 5,424.28, 8,136.42 and 1,961.56

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Solution

The fourth proportional to 5,424.28, 8,136.42 and 1,961.56 is: 2,942.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,424.28 : 8,136.42 = 1,961.56 : x
  2. Step 2: Convert to fraction form
    5,424.28/8,136.42 = 1,961.56/x
  3. Step 3: Cross multiply
    5,424.28x = 8,136.42 × 1,961.56
  4. Step 4: Simplify right side
    5,424.28x = 15,960,076.02
  5. Step 5: Solve for x
    x = 15,960,076.02/5,424.28
  6. Step 6: Final answer
    x = 2,942.34

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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.