Home / 3,315.38-4,960.80-1,999.89

Finding the Fourth Proportional to 3,315.38, 4,960.80 and 1,999.89

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Solution

The fourth proportional to 3,315.38, 4,960.80 and 1,999.89 is: 2,992.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.38 : 4,960.80 = 1,999.89 : x
  2. Step 2: Convert to fraction form
    3,315.38/4,960.80 = 1,999.89/x
  3. Step 3: Cross multiply
    3,315.38x = 4,960.80 × 1,999.89
  4. Step 4: Simplify right side
    3,315.38x = 9,921,054.31
  5. Step 5: Solve for x
    x = 9,921,054.31/3,315.38
  6. Step 6: Final answer
    x = 2,992.44

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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.