Home / 3,540.04-4,885.68-2,142.80

Finding the Fourth Proportional to 3,540.04, 4,885.68 and 2,142.80

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Solution

The fourth proportional to 3,540.04, 4,885.68 and 2,142.80 is: 2,957.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,540.04 : 4,885.68 = 2,142.80 : x
  2. Step 2: Convert to fraction form
    3,540.04/4,885.68 = 2,142.80/x
  3. Step 3: Cross multiply
    3,540.04x = 4,885.68 × 2,142.80
  4. Step 4: Simplify right side
    3,540.04x = 10,469,035.10
  5. Step 5: Solve for x
    x = 10,469,035.10/3,540.04
  6. Step 6: Final answer
    x = 2,957.32

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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.