Home / 3,270.75-4,513.68-1,778.70

Finding the Fourth Proportional to 3,270.75, 4,513.68 and 1,778.70

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Solution

The fourth proportional to 3,270.75, 4,513.68 and 1,778.70 is: 2,454.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,270.75 : 4,513.68 = 1,778.70 : x
  2. Step 2: Convert to fraction form
    3,270.75/4,513.68 = 1,778.70/x
  3. Step 3: Cross multiply
    3,270.75x = 4,513.68 × 1,778.70
  4. Step 4: Simplify right side
    3,270.75x = 8,028,482.62
  5. Step 5: Solve for x
    x = 8,028,482.62/3,270.75
  6. Step 6: Final answer
    x = 2,454.63

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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.