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Finding the Fourth Proportional to 3,872.70, 5,804.91 and 1,790.28

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Solution

The fourth proportional to 3,872.70, 5,804.91 and 1,790.28 is: 2,683.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,872.70 : 5,804.91 = 1,790.28 : x
  2. Step 2: Convert to fraction form
    3,872.70/5,804.91 = 1,790.28/x
  3. Step 3: Cross multiply
    3,872.70x = 5,804.91 × 1,790.28
  4. Step 4: Simplify right side
    3,872.70x = 10,392,414.27
  5. Step 5: Solve for x
    x = 10,392,414.27/3,872.70
  6. Step 6: Final answer
    x = 2,683.51

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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.