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Finding the Fourth Proportional to 8,973.72, 13,458.68 and 3,425.80

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Solution

The fourth proportional to 8,973.72, 13,458.68 and 3,425.80 is: 5,137.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,973.72 : 13,458.68 = 3,425.80 : x
  2. Step 2: Convert to fraction form
    8,973.72/13,458.68 = 3,425.80/x
  3. Step 3: Cross multiply
    8,973.72x = 13,458.68 × 3,425.80
  4. Step 4: Simplify right side
    8,973.72x = 46,106,745.94
  5. Step 5: Solve for x
    x = 46,106,745.94/8,973.72
  6. Step 6: Final answer
    x = 5,137.97

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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.