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Finding the Fourth Proportional to 3,721.92, 5,136.48 and 2,065.92

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Solution

The fourth proportional to 3,721.92, 5,136.48 and 2,065.92 is: 2,851.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.92 : 5,136.48 = 2,065.92 : x
  2. Step 2: Convert to fraction form
    3,721.92/5,136.48 = 2,065.92/x
  3. Step 3: Cross multiply
    3,721.92x = 5,136.48 × 2,065.92
  4. Step 4: Simplify right side
    3,721.92x = 10,611,556.76
  5. Step 5: Solve for x
    x = 10,611,556.76/3,721.92
  6. Step 6: Final answer
    x = 2,851.10

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.