Home / 3,174.89-4,379.83-1,915.99

Finding the Fourth Proportional to 3,174.89, 4,379.83 and 1,915.99

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Solution

The fourth proportional to 3,174.89, 4,379.83 and 1,915.99 is: 2,643.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,174.89 : 4,379.83 = 1,915.99 : x
  2. Step 2: Convert to fraction form
    3,174.89/4,379.83 = 1,915.99/x
  3. Step 3: Cross multiply
    3,174.89x = 4,379.83 × 1,915.99
  4. Step 4: Simplify right side
    3,174.89x = 8,391,694.74
  5. Step 5: Solve for x
    x = 8,391,694.74/3,174.89
  6. Step 6: Final answer
    x = 2,643.15

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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.