Home / 4,120.05-5,679.03-3,222.21

Finding the Fourth Proportional to 4,120.05, 5,679.03 and 3,222.21

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Solution

The fourth proportional to 4,120.05, 5,679.03 and 3,222.21 is: 4,441.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.05 : 5,679.03 = 3,222.21 : x
  2. Step 2: Convert to fraction form
    4,120.05/5,679.03 = 3,222.21/x
  3. Step 3: Cross multiply
    4,120.05x = 5,679.03 × 3,222.21
  4. Step 4: Simplify right side
    4,120.05x = 18,299,027.26
  5. Step 5: Solve for x
    x = 18,299,027.26/4,120.05
  6. Step 6: Final answer
    x = 4,441.46

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Half scale
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Double scale
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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.