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Finding the Fourth Proportional to 3,969.24, 5,949.96 and 1,889.50

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Solution

The fourth proportional to 3,969.24, 5,949.96 and 1,889.50 is: 2,832.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969.24 : 5,949.96 = 1,889.50 : x
  2. Step 2: Convert to fraction form
    3,969.24/5,949.96 = 1,889.50/x
  3. Step 3: Cross multiply
    3,969.24x = 5,949.96 × 1,889.50
  4. Step 4: Simplify right side
    3,969.24x = 11,242,449.42
  5. Step 5: Solve for x
    x = 11,242,449.42/3,969.24
  6. Step 6: Final answer
    x = 2,832.39

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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.