Home / 2,771.32-4,157.97-1,128.82

Finding the Fourth Proportional to 2,771.32, 4,157.97 and 1,128.82

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Solution

The fourth proportional to 2,771.32, 4,157.97 and 1,128.82 is: 1,693.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,771.32 : 4,157.97 = 1,128.82 : x
  2. Step 2: Convert to fraction form
    2,771.32/4,157.97 = 1,128.82/x
  3. Step 3: Cross multiply
    2,771.32x = 4,157.97 × 1,128.82
  4. Step 4: Simplify right side
    2,771.32x = 4,693,599.70
  5. Step 5: Solve for x
    x = 4,693,599.70/2,771.32
  6. Step 6: Final answer
    x = 1,693.63

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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.