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Finding the Fourth Proportional to 3,861.89, 5,794.93 and 1,640.37

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Solution

The fourth proportional to 3,861.89, 5,794.93 and 1,640.37 is: 2,461.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.89 : 5,794.93 = 1,640.37 : x
  2. Step 2: Convert to fraction form
    3,861.89/5,794.93 = 1,640.37/x
  3. Step 3: Cross multiply
    3,861.89x = 5,794.93 × 1,640.37
  4. Step 4: Simplify right side
    3,861.89x = 9,505,829.32
  5. Step 5: Solve for x
    x = 9,505,829.32/3,861.89
  6. Step 6: Final answer
    x = 2,461.45

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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.