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Finding the Fourth Proportional to 2,136.31, 3,204.24 and 675.48

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Solution

The fourth proportional to 2,136.31, 3,204.24 and 675.48 is: 1,013.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136.31 : 3,204.24 = 675.48 : x
  2. Step 2: Convert to fraction form
    2,136.31/3,204.24 = 675.48/x
  3. Step 3: Cross multiply
    2,136.31x = 3,204.24 × 675.48
  4. Step 4: Simplify right side
    2,136.31x = 2,164,400.04
  5. Step 5: Solve for x
    x = 2,164,400.04/2,136.31
  6. Step 6: Final answer
    x = 1,013.15

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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.