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Finding the Fourth Proportional to 8,751.95, 13,129.88 and 3,205.18

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Solution

The fourth proportional to 8,751.95, 13,129.88 and 3,205.18 is: 4,808.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,751.95 : 13,129.88 = 3,205.18 : x
  2. Step 2: Convert to fraction form
    8,751.95/13,129.88 = 3,205.18/x
  3. Step 3: Cross multiply
    8,751.95x = 13,129.88 × 3,205.18
  4. Step 4: Simplify right side
    8,751.95x = 42,083,669.62
  5. Step 5: Solve for x
    x = 42,083,669.62/8,751.95
  6. Step 6: Final answer
    x = 4,808.49

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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.