Home / 5,815.83-8,726.74-2,120.55

Finding the Fourth Proportional to 5,815.83, 8,726.74 and 2,120.55

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Solution

The fourth proportional to 5,815.83, 8,726.74 and 2,120.55 is: 3,181.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,815.83 : 8,726.74 = 2,120.55 : x
  2. Step 2: Convert to fraction form
    5,815.83/8,726.74 = 2,120.55/x
  3. Step 3: Cross multiply
    5,815.83x = 8,726.74 × 2,120.55
  4. Step 4: Simplify right side
    5,815.83x = 18,505,524.11
  5. Step 5: Solve for x
    x = 18,505,524.11/5,815.83
  6. Step 6: Final answer
    x = 3,181.93

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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.