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Finding the Fourth Proportional to 2,692.08, 4,044.60 and 1,720.08

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Solution

The fourth proportional to 2,692.08, 4,044.60 and 1,720.08 is: 2,584.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,692.08 : 4,044.60 = 1,720.08 : x
  2. Step 2: Convert to fraction form
    2,692.08/4,044.60 = 1,720.08/x
  3. Step 3: Cross multiply
    2,692.08x = 4,044.60 × 1,720.08
  4. Step 4: Simplify right side
    2,692.08x = 6,957,035.57
  5. Step 5: Solve for x
    x = 6,957,035.57/2,692.08
  6. Step 6: Final answer
    x = 2,584.26

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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.