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Finding the Fourth Proportional to 1,692.03, 2,334.30 and 1,028.78

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Solution

The fourth proportional to 1,692.03, 2,334.30 and 1,028.78 is: 1,419.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,692.03 : 2,334.30 = 1,028.78 : x
  2. Step 2: Convert to fraction form
    1,692.03/2,334.30 = 1,028.78/x
  3. Step 3: Cross multiply
    1,692.03x = 2,334.30 × 1,028.78
  4. Step 4: Simplify right side
    1,692.03x = 2,401,469.48
  5. Step 5: Solve for x
    x = 2,401,469.48/1,692.03
  6. Step 6: Final answer
    x = 1,419.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.