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Finding the Fourth Proportional to 8,718.98, 13,074.38 and 3,168.41

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Solution

The fourth proportional to 8,718.98, 13,074.38 and 3,168.41 is: 4,751.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,718.98 : 13,074.38 = 3,168.41 : x
  2. Step 2: Convert to fraction form
    8,718.98/13,074.38 = 3,168.41/x
  3. Step 3: Cross multiply
    8,718.98x = 13,074.38 × 3,168.41
  4. Step 4: Simplify right side
    8,718.98x = 41,424,980.49
  5. Step 5: Solve for x
    x = 41,424,980.49/8,718.98
  6. Step 6: Final answer
    x = 4,751.13

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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.