Home / 2,619.72-3,928.54-1,157.84

Finding the Fourth Proportional to 2,619.72, 3,928.54 and 1,157.84

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Solution

The fourth proportional to 2,619.72, 3,928.54 and 1,157.84 is: 1,736.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.72 : 3,928.54 = 1,157.84 : x
  2. Step 2: Convert to fraction form
    2,619.72/3,928.54 = 1,157.84/x
  3. Step 3: Cross multiply
    2,619.72x = 3,928.54 × 1,157.84
  4. Step 4: Simplify right side
    2,619.72x = 4,548,620.75
  5. Step 5: Solve for x
    x = 4,548,620.75/2,619.72
  6. Step 6: Final answer
    x = 1,736.30

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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.