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Finding the Fourth Proportional to 8,636.94, 12,952.65 and 3,705.25

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Solution

The fourth proportional to 8,636.94, 12,952.65 and 3,705.25 is: 5,556.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,636.94 : 12,952.65 = 3,705.25 : x
  2. Step 2: Convert to fraction form
    8,636.94/12,952.65 = 3,705.25/x
  3. Step 3: Cross multiply
    8,636.94x = 12,952.65 × 3,705.25
  4. Step 4: Simplify right side
    8,636.94x = 47,992,806.41
  5. Step 5: Solve for x
    x = 47,992,806.41/8,636.94
  6. Step 6: Final answer
    x = 5,556.69

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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.