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Finding the Fourth Proportional to 3,938.55, 5,907.01 and 1,745.88

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Solution

The fourth proportional to 3,938.55, 5,907.01 and 1,745.88 is: 2,618.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.55 : 5,907.01 = 1,745.88 : x
  2. Step 2: Convert to fraction form
    3,938.55/5,907.01 = 1,745.88/x
  3. Step 3: Cross multiply
    3,938.55x = 5,907.01 × 1,745.88
  4. Step 4: Simplify right side
    3,938.55x = 10,312,930.62
  5. Step 5: Solve for x
    x = 10,312,930.62/3,938.55
  6. Step 6: Final answer
    x = 2,618.46

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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.