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Finding the Fourth Proportional to 5,285.08, 7,921.48 and 1,996.08

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Solution

The fourth proportional to 5,285.08, 7,921.48 and 1,996.08 is: 2,991.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285.08 : 7,921.48 = 1,996.08 : x
  2. Step 2: Convert to fraction form
    5,285.08/7,921.48 = 1,996.08/x
  3. Step 3: Cross multiply
    5,285.08x = 7,921.48 × 1,996.08
  4. Step 4: Simplify right side
    5,285.08x = 15,811,907.80
  5. Step 5: Solve for x
    x = 15,811,907.80/5,285.08
  6. Step 6: Final answer
    x = 2,991.80

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1.5x scale

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.