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Finding the Fourth Proportional to 2,091.07, 3,136.92 and 704.07

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Solution

The fourth proportional to 2,091.07, 3,136.92 and 704.07 is: 1,056.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,091.07 : 3,136.92 = 704.07 : x
  2. Step 2: Convert to fraction form
    2,091.07/3,136.92 = 704.07/x
  3. Step 3: Cross multiply
    2,091.07x = 3,136.92 × 704.07
  4. Step 4: Simplify right side
    2,091.07x = 2,208,611.26
  5. Step 5: Solve for x
    x = 2,208,611.26/2,091.07
  6. Step 6: Final answer
    x = 1,056.21

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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.