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Finding the Fourth Proportional to 1,729.42, 2,593.06 and 742.87

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Solution

The fourth proportional to 1,729.42, 2,593.06 and 742.87 is: 1,113.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.42 : 2,593.06 = 742.87 : x
  2. Step 2: Convert to fraction form
    1,729.42/2,593.06 = 742.87/x
  3. Step 3: Cross multiply
    1,729.42x = 2,593.06 × 742.87
  4. Step 4: Simplify right side
    1,729.42x = 1,926,307.87
  5. Step 5: Solve for x
    x = 1,926,307.87/1,729.42
  6. Step 6: Final answer
    x = 1,113.85

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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.