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Finding the Fourth Proportional to 2,692.37, 4,039.37 and 961.13

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Solution

The fourth proportional to 2,692.37, 4,039.37 and 961.13 is: 1,441.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,692.37 : 4,039.37 = 961.13 : x
  2. Step 2: Convert to fraction form
    2,692.37/4,039.37 = 961.13/x
  3. Step 3: Cross multiply
    2,692.37x = 4,039.37 × 961.13
  4. Step 4: Simplify right side
    2,692.37x = 3,882,334.69
  5. Step 5: Solve for x
    x = 3,882,334.69/2,692.37
  6. Step 6: Final answer
    x = 1,441.98

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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.