Home / 1,692.11-2,336.09-1,290.62

Finding the Fourth Proportional to 1,692.11, 2,336.09 and 1,290.62

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Solution

The fourth proportional to 1,692.11, 2,336.09 and 1,290.62 is: 1,781.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,692.11 : 2,336.09 = 1,290.62 : x
  2. Step 2: Convert to fraction form
    1,692.11/2,336.09 = 1,290.62/x
  3. Step 3: Cross multiply
    1,692.11x = 2,336.09 × 1,290.62
  4. Step 4: Simplify right side
    1,692.11x = 3,014,986.34
  5. Step 5: Solve for x
    x = 3,014,986.34/1,692.11
  6. Step 6: Final answer
    x = 1,781.80

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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.