Home / 2,692.75-4,039.80-1,231.60

Finding the Fourth Proportional to 2,692.75, 4,039.80 and 1,231.60

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Solution

The fourth proportional to 2,692.75, 4,039.80 and 1,231.60 is: 1,847.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,692.75 : 4,039.80 = 1,231.60 : x
  2. Step 2: Convert to fraction form
    2,692.75/4,039.80 = 1,231.60/x
  3. Step 3: Cross multiply
    2,692.75x = 4,039.80 × 1,231.60
  4. Step 4: Simplify right side
    2,692.75x = 4,975,417.68
  5. Step 5: Solve for x
    x = 4,975,417.68/2,692.75
  6. Step 6: Final answer
    x = 1,847.71

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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.