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Finding the Fourth Proportional to 2,621.44, 3,932.32 and 889.92

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Solution

The fourth proportional to 2,621.44, 3,932.32 and 889.92 is: 1,334.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.44 : 3,932.32 = 889.92 : x
  2. Step 2: Convert to fraction form
    2,621.44/3,932.32 = 889.92/x
  3. Step 3: Cross multiply
    2,621.44x = 3,932.32 × 889.92
  4. Step 4: Simplify right side
    2,621.44x = 3,499,450.21
  5. Step 5: Solve for x
    x = 3,499,450.21/2,621.44
  6. Step 6: Final answer
    x = 1,334.93

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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.