Home / 1,731.96-2,390.94-1,621.44

Finding the Fourth Proportional to 1,731.96, 2,390.94 and 1,621.44

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Solution

The fourth proportional to 1,731.96, 2,390.94 and 1,621.44 is: 2,238.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,731.96 : 2,390.94 = 1,621.44 : x
  2. Step 2: Convert to fraction form
    1,731.96/2,390.94 = 1,621.44/x
  3. Step 3: Cross multiply
    1,731.96x = 2,390.94 × 1,621.44
  4. Step 4: Simplify right side
    1,731.96x = 3,876,765.75
  5. Step 5: Solve for x
    x = 3,876,765.75/1,731.96
  6. Step 6: Final answer
    x = 2,238.37

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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.