Home / 3,208.40-4,812.60-2,958.80

Finding the Fourth Proportional to 3,208.40, 4,812.60 and 2,958.80

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Solution

The fourth proportional to 3,208.40, 4,812.60 and 2,958.80 is: 4,438.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,208.40 : 4,812.60 = 2,958.80 : x
  2. Step 2: Convert to fraction form
    3,208.40/4,812.60 = 2,958.80/x
  3. Step 3: Cross multiply
    3,208.40x = 4,812.60 × 2,958.80
  4. Step 4: Simplify right side
    3,208.40x = 14,239,520.88
  5. Step 5: Solve for x
    x = 14,239,520.88/3,208.40
  6. Step 6: Final answer
    x = 4,438.20

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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.