Home / 3,540.84-5,313.80-2,855.78

Finding the Fourth Proportional to 3,540.84, 5,313.80 and 2,855.78

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Solution

The fourth proportional to 3,540.84, 5,313.80 and 2,855.78 is: 4,285.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,540.84 : 5,313.80 = 2,855.78 : x
  2. Step 2: Convert to fraction form
    3,540.84/5,313.80 = 2,855.78/x
  3. Step 3: Cross multiply
    3,540.84x = 5,313.80 × 2,855.78
  4. Step 4: Simplify right side
    3,540.84x = 15,175,043.76
  5. Step 5: Solve for x
    x = 15,175,043.76/3,540.84
  6. Step 6: Final answer
    x = 4,285.72

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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.