Home / 2,858.96-4,288.44-1,321.68

Finding the Fourth Proportional to 2,858.96, 4,288.44 and 1,321.68

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Solution

The fourth proportional to 2,858.96, 4,288.44 and 1,321.68 is: 1,982.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.96 : 4,288.44 = 1,321.68 : x
  2. Step 2: Convert to fraction form
    2,858.96/4,288.44 = 1,321.68/x
  3. Step 3: Cross multiply
    2,858.96x = 4,288.44 × 1,321.68
  4. Step 4: Simplify right side
    2,858.96x = 5,667,945.38
  5. Step 5: Solve for x
    x = 5,667,945.38/2,858.96
  6. Step 6: Final answer
    x = 1,982.52

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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.