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Finding the Fourth Proportional to 3,383.90, 4,669.75 and 1,891.80

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Solution

The fourth proportional to 3,383.90, 4,669.75 and 1,891.80 is: 2,610.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,383.90 : 4,669.75 = 1,891.80 : x
  2. Step 2: Convert to fraction form
    3,383.90/4,669.75 = 1,891.80/x
  3. Step 3: Cross multiply
    3,383.90x = 4,669.75 × 1,891.80
  4. Step 4: Simplify right side
    3,383.90x = 8,834,235.41
  5. Step 5: Solve for x
    x = 8,834,235.41/3,383.90
  6. Step 6: Final answer
    x = 2,610.67

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.