Home / 3,122.49-4,660.96-2,728.39

Finding the Fourth Proportional to 3,122.49, 4,660.96 and 2,728.39

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Solution

The fourth proportional to 3,122.49, 4,660.96 and 2,728.39 is: 4,072.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.49 : 4,660.96 = 2,728.39 : x
  2. Step 2: Convert to fraction form
    3,122.49/4,660.96 = 2,728.39/x
  3. Step 3: Cross multiply
    3,122.49x = 4,660.96 × 2,728.39
  4. Step 4: Simplify right side
    3,122.49x = 12,716,902.23
  5. Step 5: Solve for x
    x = 12,716,902.23/3,122.49
  6. Step 6: Final answer
    x = 4,072.67

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.