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Finding the Fourth Proportional to 3,882.88, 5,820.08 and 1,692.64

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Solution

The fourth proportional to 3,882.88, 5,820.08 and 1,692.64 is: 2,537.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,882.88 : 5,820.08 = 1,692.64 : x
  2. Step 2: Convert to fraction form
    3,882.88/5,820.08 = 1,692.64/x
  3. Step 3: Cross multiply
    3,882.88x = 5,820.08 × 1,692.64
  4. Step 4: Simplify right side
    3,882.88x = 9,851,300.21
  5. Step 5: Solve for x
    x = 9,851,300.21/3,882.88
  6. Step 6: Final answer
    x = 2,537.11

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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.