Home / 1,984.92-2,739.60-1,321.44

Finding the Fourth Proportional to 1,984.92, 2,739.60 and 1,321.44

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Solution

The fourth proportional to 1,984.92, 2,739.60 and 1,321.44 is: 1,823.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984.92 : 2,739.60 = 1,321.44 : x
  2. Step 2: Convert to fraction form
    1,984.92/2,739.60 = 1,321.44/x
  3. Step 3: Cross multiply
    1,984.92x = 2,739.60 × 1,321.44
  4. Step 4: Simplify right side
    1,984.92x = 3,620,217.02
  5. Step 5: Solve for x
    x = 3,620,217.02/1,984.92
  6. Step 6: Final answer
    x = 1,823.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.