Home / 1,944.21-2,684.78-1,246.80

Finding the Fourth Proportional to 1,944.21, 2,684.78 and 1,246.80

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Solution

The fourth proportional to 1,944.21, 2,684.78 and 1,246.80 is: 1,721.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,944.21 : 2,684.78 = 1,246.80 : x
  2. Step 2: Convert to fraction form
    1,944.21/2,684.78 = 1,246.80/x
  3. Step 3: Cross multiply
    1,944.21x = 2,684.78 × 1,246.80
  4. Step 4: Simplify right side
    1,944.21x = 3,347,383.70
  5. Step 5: Solve for x
    x = 3,347,383.70/1,944.21
  6. Step 6: Final answer
    x = 1,721.72

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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.