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Finding the Fourth Proportional to 1,692.94, 2,336.43 and 994.54

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Solution

The fourth proportional to 1,692.94, 2,336.43 and 994.54 is: 1,372.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,692.94 : 2,336.43 = 994.54 : x
  2. Step 2: Convert to fraction form
    1,692.94/2,336.43 = 994.54/x
  3. Step 3: Cross multiply
    1,692.94x = 2,336.43 × 994.54
  4. Step 4: Simplify right side
    1,692.94x = 2,323,673.09
  5. Step 5: Solve for x
    x = 2,323,673.09/1,692.94
  6. Step 6: Final answer
    x = 1,372.57

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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.