Home / 5,136.86-7,696.83-2,172.89

Finding the Fourth Proportional to 5,136.86, 7,696.83 and 2,172.89

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Solution

The fourth proportional to 5,136.86, 7,696.83 and 2,172.89 is: 3,255.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.86 : 7,696.83 = 2,172.89 : x
  2. Step 2: Convert to fraction form
    5,136.86/7,696.83 = 2,172.89/x
  3. Step 3: Cross multiply
    5,136.86x = 7,696.83 × 2,172.89
  4. Step 4: Simplify right side
    5,136.86x = 16,724,364.94
  5. Step 5: Solve for x
    x = 16,724,364.94/5,136.86
  6. Step 6: Final answer
    x = 3,255.76

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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.