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Finding the Fourth Proportional to 3,726, 5,589.72 and 1,261.53

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Solution

The fourth proportional to 3,726, 5,589.72 and 1,261.53 is: 1,892.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,726 : 5,589.72 = 1,261.53 : x
  2. Step 2: Convert to fraction form
    3,726/5,589.72 = 1,261.53/x
  3. Step 3: Cross multiply
    3,726x = 5,589.72 × 1,261.53
  4. Step 4: Simplify right side
    3,726x = 7,051,599.47
  5. Step 5: Solve for x
    x = 7,051,599.47/3,726
  6. Step 6: Final answer
    x = 1,892.54

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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.