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Finding the Fourth Proportional to 1,692.43, 2,336.36 and 1,313.47

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Solution

The fourth proportional to 1,692.43, 2,336.36 and 1,313.47 is: 1,813.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,692.43 : 2,336.36 = 1,313.47 : x
  2. Step 2: Convert to fraction form
    1,692.43/2,336.36 = 1,313.47/x
  3. Step 3: Cross multiply
    1,692.43x = 2,336.36 × 1,313.47
  4. Step 4: Simplify right side
    1,692.43x = 3,068,729.37
  5. Step 5: Solve for x
    x = 3,068,729.37/1,692.43
  6. Step 6: Final answer
    x = 1,813.21

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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.