Home / 3,949.35-5,450.02-2,181.07

Finding the Fourth Proportional to 3,949.35, 5,450.02 and 2,181.07

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Solution

The fourth proportional to 3,949.35, 5,450.02 and 2,181.07 is: 3,009.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,949.35 : 5,450.02 = 2,181.07 : x
  2. Step 2: Convert to fraction form
    3,949.35/5,450.02 = 2,181.07/x
  3. Step 3: Cross multiply
    3,949.35x = 5,450.02 × 2,181.07
  4. Step 4: Simplify right side
    3,949.35x = 11,886,875.12
  5. Step 5: Solve for x
    x = 11,886,875.12/3,949.35
  6. Step 6: Final answer
    x = 3,009.83

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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.