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Finding the Fourth Proportional to 6,630.64, 9,945.44 and 3,855.55

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Solution

The fourth proportional to 6,630.64, 9,945.44 and 3,855.55 is: 5,783.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,630.64 : 9,945.44 = 3,855.55 : x
  2. Step 2: Convert to fraction form
    6,630.64/9,945.44 = 3,855.55/x
  3. Step 3: Cross multiply
    6,630.64x = 9,945.44 × 3,855.55
  4. Step 4: Simplify right side
    6,630.64x = 38,345,072.19
  5. Step 5: Solve for x
    x = 38,345,072.19/6,630.64
  6. Step 6: Final answer
    x = 5,783.01

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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.