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Finding the Fourth Proportional to 1,692.49, 2,539.26 and 803.71

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Solution

The fourth proportional to 1,692.49, 2,539.26 and 803.71 is: 1,205.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,692.49 : 2,539.26 = 803.71 : x
  2. Step 2: Convert to fraction form
    1,692.49/2,539.26 = 803.71/x
  3. Step 3: Cross multiply
    1,692.49x = 2,539.26 × 803.71
  4. Step 4: Simplify right side
    1,692.49x = 2,040,828.65
  5. Step 5: Solve for x
    x = 2,040,828.65/1,692.49
  6. Step 6: Final answer
    x = 1,205.81

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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.