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Finding the Fourth Proportional to 5,808.61, 8,015.90 and 3,155.96

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Solution

The fourth proportional to 5,808.61, 8,015.90 and 3,155.96 is: 4,355.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,808.61 : 8,015.90 = 3,155.96 : x
  2. Step 2: Convert to fraction form
    5,808.61/8,015.90 = 3,155.96/x
  3. Step 3: Cross multiply
    5,808.61x = 8,015.90 × 3,155.96
  4. Step 4: Simplify right side
    5,808.61x = 25,297,843.98
  5. Step 5: Solve for x
    x = 25,297,843.98/5,808.61
  6. Step 6: Final answer
    x = 4,355.23

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Why These Related Problems?

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