Home / 2,771.68-4,157.79-1,128.37

Finding the Fourth Proportional to 2,771.68, 4,157.79 and 1,128.37

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Solution

The fourth proportional to 2,771.68, 4,157.79 and 1,128.37 is: 1,692.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,771.68 : 4,157.79 = 1,128.37 : x
  2. Step 2: Convert to fraction form
    2,771.68/4,157.79 = 1,128.37/x
  3. Step 3: Cross multiply
    2,771.68x = 4,157.79 × 1,128.37
  4. Step 4: Simplify right side
    2,771.68x = 4,691,525.50
  5. Step 5: Solve for x
    x = 4,691,525.50/2,771.68
  6. Step 6: Final answer
    x = 1,692.66

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1.5x scale

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.