Home / 2,818.80-4,221.72-2,039.76

Finding the Fourth Proportional to 2,818.80, 4,221.72 and 2,039.76

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Solution

The fourth proportional to 2,818.80, 4,221.72 and 2,039.76 is: 3,054.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.80 : 4,221.72 = 2,039.76 : x
  2. Step 2: Convert to fraction form
    2,818.80/4,221.72 = 2,039.76/x
  3. Step 3: Cross multiply
    2,818.80x = 4,221.72 × 2,039.76
  4. Step 4: Simplify right side
    2,818.80x = 8,611,295.59
  5. Step 5: Solve for x
    x = 8,611,295.59/2,818.80
  6. Step 6: Final answer
    x = 3,054.95

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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.