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Finding the Fourth Proportional to 1,962.12, 2,943.56 and 729.53

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Solution

The fourth proportional to 1,962.12, 2,943.56 and 729.53 is: 1,094.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,962.12 : 2,943.56 = 729.53 : x
  2. Step 2: Convert to fraction form
    1,962.12/2,943.56 = 729.53/x
  3. Step 3: Cross multiply
    1,962.12x = 2,943.56 × 729.53
  4. Step 4: Simplify right side
    1,962.12x = 2,147,396.96
  5. Step 5: Solve for x
    x = 2,147,396.96/1,962.12
  6. Step 6: Final answer
    x = 1,094.43

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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.