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Finding the Fourth Proportional to 6,665.45, 10,004.45 and 3,380.90

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Solution

The fourth proportional to 6,665.45, 10,004.45 and 3,380.90 is: 5,074.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,665.45 : 10,004.45 = 3,380.90 : x
  2. Step 2: Convert to fraction form
    6,665.45/10,004.45 = 3,380.90/x
  3. Step 3: Cross multiply
    6,665.45x = 10,004.45 × 3,380.90
  4. Step 4: Simplify right side
    6,665.45x = 33,823,978.08
  5. Step 5: Solve for x
    x = 33,823,978.08/6,665.45
  6. Step 6: Final answer
    x = 5,074.53

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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.