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Finding the Fourth Proportional to 7,136.28, 10,706.49 and 2,974.14

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Solution

The fourth proportional to 7,136.28, 10,706.49 and 2,974.14 is: 4,462.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,136.28 : 10,706.49 = 2,974.14 : x
  2. Step 2: Convert to fraction form
    7,136.28/10,706.49 = 2,974.14/x
  3. Step 3: Cross multiply
    7,136.28x = 10,706.49 × 2,974.14
  4. Step 4: Simplify right side
    7,136.28x = 31,842,600.17
  5. Step 5: Solve for x
    x = 31,842,600.17/7,136.28
  6. Step 6: Final answer
    x = 4,462.07

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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.