Home / 2,122.98-3,181.08-1,427.09

Finding the Fourth Proportional to 2,122.98, 3,181.08 and 1,427.09

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Solution

The fourth proportional to 2,122.98, 3,181.08 and 1,427.09 is: 2,138.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.98 : 3,181.08 = 1,427.09 : x
  2. Step 2: Convert to fraction form
    2,122.98/3,181.08 = 1,427.09/x
  3. Step 3: Cross multiply
    2,122.98x = 3,181.08 × 1,427.09
  4. Step 4: Simplify right side
    2,122.98x = 4,539,676.90
  5. Step 5: Solve for x
    x = 4,539,676.90/2,122.98
  6. Step 6: Final answer
    x = 2,138.36

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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.