Home / 5,428.07-8,136.61-2,143.48

Finding the Fourth Proportional to 5,428.07, 8,136.61 and 2,143.48

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Solution

The fourth proportional to 5,428.07, 8,136.61 and 2,143.48 is: 3,213.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.07 : 8,136.61 = 2,143.48 : x
  2. Step 2: Convert to fraction form
    5,428.07/8,136.61 = 2,143.48/x
  3. Step 3: Cross multiply
    5,428.07x = 8,136.61 × 2,143.48
  4. Step 4: Simplify right side
    5,428.07x = 17,440,660.80
  5. Step 5: Solve for x
    x = 17,440,660.80/5,428.07
  6. Step 6: Final answer
    x = 3,213.05

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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.