Home / 2,120.93-3,180.85-659.33

Finding the Fourth Proportional to 2,120.93, 3,180.85 and 659.33

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Solution

The fourth proportional to 2,120.93, 3,180.85 and 659.33 is: 988.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.93 : 3,180.85 = 659.33 : x
  2. Step 2: Convert to fraction form
    2,120.93/3,180.85 = 659.33/x
  3. Step 3: Cross multiply
    2,120.93x = 3,180.85 × 659.33
  4. Step 4: Simplify right side
    2,120.93x = 2,097,229.83
  5. Step 5: Solve for x
    x = 2,097,229.83/2,120.93
  6. Step 6: Final answer
    x = 988.83

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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.