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Finding the Fourth Proportional to 2,299.72, 3,450.09 and 838.87

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Solution

The fourth proportional to 2,299.72, 3,450.09 and 838.87 is: 1,258.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,299.72 : 3,450.09 = 838.87 : x
  2. Step 2: Convert to fraction form
    2,299.72/3,450.09 = 838.87/x
  3. Step 3: Cross multiply
    2,299.72x = 3,450.09 × 838.87
  4. Step 4: Simplify right side
    2,299.72x = 2,894,179.10
  5. Step 5: Solve for x
    x = 2,894,179.10/2,299.72
  6. Step 6: Final answer
    x = 1,258.49

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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.