Home / 1,944.92-2,679.68-1,280.60

Finding the Fourth Proportional to 1,944.92, 2,679.68 and 1,280.60

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Solution

The fourth proportional to 1,944.92, 2,679.68 and 1,280.60 is: 1,764.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,944.92 : 2,679.68 = 1,280.60 : x
  2. Step 2: Convert to fraction form
    1,944.92/2,679.68 = 1,280.60/x
  3. Step 3: Cross multiply
    1,944.92x = 2,679.68 × 1,280.60
  4. Step 4: Simplify right side
    1,944.92x = 3,431,598.21
  5. Step 5: Solve for x
    x = 3,431,598.21/1,944.92
  6. Step 6: Final answer
    x = 1,764.39

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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.