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Finding the Fourth Proportional to 4,980.67, 7,469.17 and 1,692.88

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Solution

The fourth proportional to 4,980.67, 7,469.17 and 1,692.88 is: 2,538.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,980.67 : 7,469.17 = 1,692.88 : x
  2. Step 2: Convert to fraction form
    4,980.67/7,469.17 = 1,692.88/x
  3. Step 3: Cross multiply
    4,980.67x = 7,469.17 × 1,692.88
  4. Step 4: Simplify right side
    4,980.67x = 12,644,408.51
  5. Step 5: Solve for x
    x = 12,644,408.51/4,980.67
  6. Step 6: Final answer
    x = 2,538.70

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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.