Home / 3,172.89-4,379.00-1,914.66

Finding the Fourth Proportional to 3,172.89, 4,379.00 and 1,914.66

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Solution

The fourth proportional to 3,172.89, 4,379.00 and 1,914.66 is: 2,642.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.89 : 4,379.00 = 1,914.66 : x
  2. Step 2: Convert to fraction form
    3,172.89/4,379.00 = 1,914.66/x
  3. Step 3: Cross multiply
    3,172.89x = 4,379.00 × 1,914.66
  4. Step 4: Simplify right side
    3,172.89x = 8,384,300.93
  5. Step 5: Solve for x
    x = 8,384,300.93/3,172.89
  6. Step 6: Final answer
    x = 2,642.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.