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Finding the Fourth Proportional to 3,709.60, 5,563.60 and 1,629.60

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Solution

The fourth proportional to 3,709.60, 5,563.60 and 1,629.60 is: 2,444.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,709.60 : 5,563.60 = 1,629.60 : x
  2. Step 2: Convert to fraction form
    3,709.60/5,563.60 = 1,629.60/x
  3. Step 3: Cross multiply
    3,709.60x = 5,563.60 × 1,629.60
  4. Step 4: Simplify right side
    3,709.60x = 9,066,442.56
  5. Step 5: Solve for x
    x = 9,066,442.56/3,709.60
  6. Step 6: Final answer
    x = 2,444.05

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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.