Home / 3,619.24-4,992.42-2,221

Finding the Fourth Proportional to 3,619.24, 4,992.42 and 2,221

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Solution

The fourth proportional to 3,619.24, 4,992.42 and 2,221 is: 3,063.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.24 : 4,992.42 = 2,221 : x
  2. Step 2: Convert to fraction form
    3,619.24/4,992.42 = 2,221/x
  3. Step 3: Cross multiply
    3,619.24x = 4,992.42 × 2,221
  4. Step 4: Simplify right side
    3,619.24x = 11,088,164.82
  5. Step 5: Solve for x
    x = 11,088,164.82/3,619.24
  6. Step 6: Final answer
    x = 3,063.67

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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.