Home / 2,231.20-3,346.80-1,874.80

Finding the Fourth Proportional to 2,231.20, 3,346.80 and 1,874.80

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Solution

The fourth proportional to 2,231.20, 3,346.80 and 1,874.80 is: 2,812.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,231.20 : 3,346.80 = 1,874.80 : x
  2. Step 2: Convert to fraction form
    2,231.20/3,346.80 = 1,874.80/x
  3. Step 3: Cross multiply
    2,231.20x = 3,346.80 × 1,874.80
  4. Step 4: Simplify right side
    2,231.20x = 6,274,580.64
  5. Step 5: Solve for x
    x = 6,274,580.64/2,231.20
  6. Step 6: Final answer
    x = 2,812.20

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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.