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Finding the Fourth Proportional to 4,399.60, 6,586.60 and 3,938.80

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Solution

The fourth proportional to 4,399.60, 6,586.60 and 3,938.80 is: 5,896.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,399.60 : 6,586.60 = 3,938.80 : x
  2. Step 2: Convert to fraction form
    4,399.60/6,586.60 = 3,938.80/x
  3. Step 3: Cross multiply
    4,399.60x = 6,586.60 × 3,938.80
  4. Step 4: Simplify right side
    4,399.60x = 25,943,300.08
  5. Step 5: Solve for x
    x = 25,943,300.08/4,399.60
  6. Step 6: Final answer
    x = 5,896.74

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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.