Home / 2,157.71-3,234.87-1,984.73

Finding the Fourth Proportional to 2,157.71, 3,234.87 and 1,984.73

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Solution

The fourth proportional to 2,157.71, 3,234.87 and 1,984.73 is: 2,975.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157.71 : 3,234.87 = 1,984.73 : x
  2. Step 2: Convert to fraction form
    2,157.71/3,234.87 = 1,984.73/x
  3. Step 3: Cross multiply
    2,157.71x = 3,234.87 × 1,984.73
  4. Step 4: Simplify right side
    2,157.71x = 6,420,327.36
  5. Step 5: Solve for x
    x = 6,420,327.36/2,157.71
  6. Step 6: Final answer
    x = 2,975.54

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1.5x scale

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.