Home / 2,121.56-3,181.77-1,503.44

Finding the Fourth Proportional to 2,121.56, 3,181.77 and 1,503.44

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Solution

The fourth proportional to 2,121.56, 3,181.77 and 1,503.44 is: 2,254.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.56 : 3,181.77 = 1,503.44 : x
  2. Step 2: Convert to fraction form
    2,121.56/3,181.77 = 1,503.44/x
  3. Step 3: Cross multiply
    2,121.56x = 3,181.77 × 1,503.44
  4. Step 4: Simplify right side
    2,121.56x = 4,783,584.38
  5. Step 5: Solve for x
    x = 4,783,584.38/2,121.56
  6. Step 6: Final answer
    x = 2,254.75

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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.