Home / 3,181.09-4,389.51-1,921.94

Finding the Fourth Proportional to 3,181.09, 4,389.51 and 1,921.94

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Solution

The fourth proportional to 3,181.09, 4,389.51 and 1,921.94 is: 2,652.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.09 : 4,389.51 = 1,921.94 : x
  2. Step 2: Convert to fraction form
    3,181.09/4,389.51 = 1,921.94/x
  3. Step 3: Cross multiply
    3,181.09x = 4,389.51 × 1,921.94
  4. Step 4: Simplify right side
    3,181.09x = 8,436,374.85
  5. Step 5: Solve for x
    x = 8,436,374.85/3,181.09
  6. Step 6: Final answer
    x = 2,652.04

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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.