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Finding the Fourth Proportional to 8,745.44, 13,067 and 8,439.28

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Solution

The fourth proportional to 8,745.44, 13,067 and 8,439.28 is: 12,609.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,745.44 : 13,067 = 8,439.28 : x
  2. Step 2: Convert to fraction form
    8,745.44/13,067 = 8,439.28/x
  3. Step 3: Cross multiply
    8,745.44x = 13,067 × 8,439.28
  4. Step 4: Simplify right side
    8,745.44x = 110,276,071.76
  5. Step 5: Solve for x
    x = 110,276,071.76/8,745.44
  6. Step 6: Final answer
    x = 12,609.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.