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Finding the Fourth Proportional to 4,591.70, 6,883.71 and 2,128.28

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Solution

The fourth proportional to 4,591.70, 6,883.71 and 2,128.28 is: 3,190.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,591.70 : 6,883.71 = 2,128.28 : x
  2. Step 2: Convert to fraction form
    4,591.70/6,883.71 = 2,128.28/x
  3. Step 3: Cross multiply
    4,591.70x = 6,883.71 × 2,128.28
  4. Step 4: Simplify right side
    4,591.70x = 14,650,427.90
  5. Step 5: Solve for x
    x = 14,650,427.90/4,591.70
  6. Step 6: Final answer
    x = 3,190.64

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.