Home / 3,121.79-4,679.96-2,662.52

Finding the Fourth Proportional to 3,121.79, 4,679.96 and 2,662.52

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Solution

The fourth proportional to 3,121.79, 4,679.96 and 2,662.52 is: 3,991.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.79 : 4,679.96 = 2,662.52 : x
  2. Step 2: Convert to fraction form
    3,121.79/4,679.96 = 2,662.52/x
  3. Step 3: Cross multiply
    3,121.79x = 4,679.96 × 2,662.52
  4. Step 4: Simplify right side
    3,121.79x = 12,460,450.39
  5. Step 5: Solve for x
    x = 12,460,450.39/3,121.79
  6. Step 6: Final answer
    x = 3,991.45

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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.