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Finding the Fourth Proportional to 2,636.55, 3,640.14 and 1,692.75

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Solution

The fourth proportional to 2,636.55, 3,640.14 and 1,692.75 is: 2,337.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,636.55 : 3,640.14 = 1,692.75 : x
  2. Step 2: Convert to fraction form
    2,636.55/3,640.14 = 1,692.75/x
  3. Step 3: Cross multiply
    2,636.55x = 3,640.14 × 1,692.75
  4. Step 4: Simplify right side
    2,636.55x = 6,161,846.99
  5. Step 5: Solve for x
    x = 6,161,846.99/2,636.55
  6. Step 6: Final answer
    x = 2,337.09

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1.5x scale

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.