Home / 5,181.32-7,768.73-2,221.68

Finding the Fourth Proportional to 5,181.32, 7,768.73 and 2,221.68

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Solution

The fourth proportional to 5,181.32, 7,768.73 and 2,221.68 is: 3,331.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,181.32 : 7,768.73 = 2,221.68 : x
  2. Step 2: Convert to fraction form
    5,181.32/7,768.73 = 2,221.68/x
  3. Step 3: Cross multiply
    5,181.32x = 7,768.73 × 2,221.68
  4. Step 4: Simplify right side
    5,181.32x = 17,259,620.96
  5. Step 5: Solve for x
    x = 17,259,620.96/5,181.32
  6. Step 6: Final answer
    x = 3,331.13

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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.