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Finding the Fourth Proportional to 2,091.26, 3,136.76 and 630.44

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Solution

The fourth proportional to 2,091.26, 3,136.76 and 630.44 is: 945.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,091.26 : 3,136.76 = 630.44 : x
  2. Step 2: Convert to fraction form
    2,091.26/3,136.76 = 630.44/x
  3. Step 3: Cross multiply
    2,091.26x = 3,136.76 × 630.44
  4. Step 4: Simplify right side
    2,091.26x = 1,977,538.97
  5. Step 5: Solve for x
    x = 1,977,538.97/2,091.26
  6. Step 6: Final answer
    x = 945.62

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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.