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Finding the Fourth Proportional to 8,745.64, 13,107.12 and 3,548.68

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Solution

The fourth proportional to 8,745.64, 13,107.12 and 3,548.68 is: 5,318.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,745.64 : 13,107.12 = 3,548.68 : x
  2. Step 2: Convert to fraction form
    8,745.64/13,107.12 = 3,548.68/x
  3. Step 3: Cross multiply
    8,745.64x = 13,107.12 × 3,548.68
  4. Step 4: Simplify right side
    8,745.64x = 46,512,974.60
  5. Step 5: Solve for x
    x = 46,512,974.60/8,745.64
  6. Step 6: Final answer
    x = 5,318.42

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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.