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Finding the Fourth Proportional to 3,789.63, 5,684.49 and 1,324.49

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Solution

The fourth proportional to 3,789.63, 5,684.49 and 1,324.49 is: 1,986.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,789.63 : 5,684.49 = 1,324.49 : x
  2. Step 2: Convert to fraction form
    3,789.63/5,684.49 = 1,324.49/x
  3. Step 3: Cross multiply
    3,789.63x = 5,684.49 × 1,324.49
  4. Step 4: Simplify right side
    3,789.63x = 7,529,021.74
  5. Step 5: Solve for x
    x = 7,529,021.74/3,789.63
  6. Step 6: Final answer
    x = 1,986.74

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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.