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Finding the Fourth Proportional to 3,938.21, 5,907.41 and 1,342.97

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Solution

The fourth proportional to 3,938.21, 5,907.41 and 1,342.97 is: 2,014.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.21 : 5,907.41 = 1,342.97 : x
  2. Step 2: Convert to fraction form
    3,938.21/5,907.41 = 1,342.97/x
  3. Step 3: Cross multiply
    3,938.21x = 5,907.41 × 1,342.97
  4. Step 4: Simplify right side
    3,938.21x = 7,933,443.19
  5. Step 5: Solve for x
    x = 7,933,443.19/3,938.21
  6. Step 6: Final answer
    x = 2,014.48

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1.5x scale

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.