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Finding the Fourth Proportional to 2,029.72, 3,044.95 and 643.41

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Solution

The fourth proportional to 2,029.72, 3,044.95 and 643.41 is: 965.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,029.72 : 3,044.95 = 643.41 : x
  2. Step 2: Convert to fraction form
    2,029.72/3,044.95 = 643.41/x
  3. Step 3: Cross multiply
    2,029.72x = 3,044.95 × 643.41
  4. Step 4: Simplify right side
    2,029.72x = 1,959,136.05
  5. Step 5: Solve for x
    x = 1,959,136.05/2,029.72
  6. Step 6: Final answer
    x = 965.22

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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.