Home / 4,880.40-7,324.20-1,960.80

Finding the Fourth Proportional to 4,880.40, 7,324.20 and 1,960.80

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Solution

The fourth proportional to 4,880.40, 7,324.20 and 1,960.80 is: 2,942.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,880.40 : 7,324.20 = 1,960.80 : x
  2. Step 2: Convert to fraction form
    4,880.40/7,324.20 = 1,960.80/x
  3. Step 3: Cross multiply
    4,880.40x = 7,324.20 × 1,960.80
  4. Step 4: Simplify right side
    4,880.40x = 14,361,291.36
  5. Step 5: Solve for x
    x = 14,361,291.36/4,880.40
  6. Step 6: Final answer
    x = 2,942.65

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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.