Home / 3,821.28-5,276.40-3,072.84

Finding the Fourth Proportional to 3,821.28, 5,276.40 and 3,072.84

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Solution

The fourth proportional to 3,821.28, 5,276.40 and 3,072.84 is: 4,242.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.28 : 5,276.40 = 3,072.84 : x
  2. Step 2: Convert to fraction form
    3,821.28/5,276.40 = 3,072.84/x
  3. Step 3: Cross multiply
    3,821.28x = 5,276.40 × 3,072.84
  4. Step 4: Simplify right side
    3,821.28x = 16,213,532.98
  5. Step 5: Solve for x
    x = 16,213,532.98/3,821.28
  6. Step 6: Final answer
    x = 4,242.96

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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.