Home / 3,210.45-4,817.21-2,224.78

Finding the Fourth Proportional to 3,210.45, 4,817.21 and 2,224.78

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Solution

The fourth proportional to 3,210.45, 4,817.21 and 2,224.78 is: 3,338.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,210.45 : 4,817.21 = 2,224.78 : x
  2. Step 2: Convert to fraction form
    3,210.45/4,817.21 = 2,224.78/x
  3. Step 3: Cross multiply
    3,210.45x = 4,817.21 × 2,224.78
  4. Step 4: Simplify right side
    3,210.45x = 10,717,236.39
  5. Step 5: Solve for x
    x = 10,717,236.39/3,210.45
  6. Step 6: Final answer
    x = 3,338.23

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Half scale
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Double scale
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Similar ratio
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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.