Home / 3,121-4,676.36-2,799.48

Finding the Fourth Proportional to 3,121, 4,676.36 and 2,799.48

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Solution

The fourth proportional to 3,121, 4,676.36 and 2,799.48 is: 4,194.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121 : 4,676.36 = 2,799.48 : x
  2. Step 2: Convert to fraction form
    3,121/4,676.36 = 2,799.48/x
  3. Step 3: Cross multiply
    3,121x = 4,676.36 × 2,799.48
  4. Step 4: Simplify right side
    3,121x = 13,091,376.29
  5. Step 5: Solve for x
    x = 13,091,376.29/3,121
  6. Step 6: Final answer
    x = 4,194.61

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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.