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Finding the Fourth Proportional to 8,709.10, 13,059.87 and 3,160.60

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Solution

The fourth proportional to 8,709.10, 13,059.87 and 3,160.60 is: 4,739.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,709.10 : 13,059.87 = 3,160.60 : x
  2. Step 2: Convert to fraction form
    8,709.10/13,059.87 = 3,160.60/x
  3. Step 3: Cross multiply
    8,709.10x = 13,059.87 × 3,160.60
  4. Step 4: Simplify right side
    8,709.10x = 41,277,025.12
  5. Step 5: Solve for x
    x = 41,277,025.12/8,709.10
  6. Step 6: Final answer
    x = 4,739.53

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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.