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Finding the Fourth Proportional to 3,540.23, 5,310.32 and 907.73

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Solution

The fourth proportional to 3,540.23, 5,310.32 and 907.73 is: 1,361.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,540.23 : 5,310.32 = 907.73 : x
  2. Step 2: Convert to fraction form
    3,540.23/5,310.32 = 907.73/x
  3. Step 3: Cross multiply
    3,540.23x = 5,310.32 × 907.73
  4. Step 4: Simplify right side
    3,540.23x = 4,820,325.60
  5. Step 5: Solve for x
    x = 4,820,325.60/3,540.23
  6. Step 6: Final answer
    x = 1,361.59

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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.