Home / 3,172.86-4,751.09-2,188.71

Finding the Fourth Proportional to 3,172.86, 4,751.09 and 2,188.71

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Solution

The fourth proportional to 3,172.86, 4,751.09 and 2,188.71 is: 3,277.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.86 : 4,751.09 = 2,188.71 : x
  2. Step 2: Convert to fraction form
    3,172.86/4,751.09 = 2,188.71/x
  3. Step 3: Cross multiply
    3,172.86x = 4,751.09 × 2,188.71
  4. Step 4: Simplify right side
    3,172.86x = 10,398,763.67
  5. Step 5: Solve for x
    x = 10,398,763.67/3,172.86
  6. Step 6: Final answer
    x = 3,277.41

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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.