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Finding the Fourth Proportional to 2,136.02, 3,203.30 and 819.46

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Solution

The fourth proportional to 2,136.02, 3,203.30 and 819.46 is: 1,228.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136.02 : 3,203.30 = 819.46 : x
  2. Step 2: Convert to fraction form
    2,136.02/3,203.30 = 819.46/x
  3. Step 3: Cross multiply
    2,136.02x = 3,203.30 × 819.46
  4. Step 4: Simplify right side
    2,136.02x = 2,624,976.22
  5. Step 5: Solve for x
    x = 2,624,976.22/2,136.02
  6. Step 6: Final answer
    x = 1,228.91

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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.