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Finding the Fourth Proportional to 6,815.00, 9,405.16 and 3,790.55

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Solution

The fourth proportional to 6,815.00, 9,405.16 and 3,790.55 is: 5,231.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,815.00 : 9,405.16 = 3,790.55 : x
  2. Step 2: Convert to fraction form
    6,815.00/9,405.16 = 3,790.55/x
  3. Step 3: Cross multiply
    6,815.00x = 9,405.16 × 3,790.55
  4. Step 4: Simplify right side
    6,815.00x = 35,650,743.27
  5. Step 5: Solve for x
    x = 35,650,743.27/6,815.00
  6. Step 6: Final answer
    x = 5,231.21

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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.