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Finding the Fourth Proportional to 5,355.81, 8,028.90 and 2,068.11

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Solution

The fourth proportional to 5,355.81, 8,028.90 and 2,068.11 is: 3,100.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,355.81 : 8,028.90 = 2,068.11 : x
  2. Step 2: Convert to fraction form
    5,355.81/8,028.90 = 2,068.11/x
  3. Step 3: Cross multiply
    5,355.81x = 8,028.90 × 2,068.11
  4. Step 4: Simplify right side
    5,355.81x = 16,604,648.38
  5. Step 5: Solve for x
    x = 16,604,648.38/5,355.81
  6. Step 6: Final answer
    x = 3,100.31

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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.