Home / 2,818.14-3,889.66-1,639.90

Finding the Fourth Proportional to 2,818.14, 3,889.66 and 1,639.90

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Solution

The fourth proportional to 2,818.14, 3,889.66 and 1,639.90 is: 2,263.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.14 : 3,889.66 = 1,639.90 : x
  2. Step 2: Convert to fraction form
    2,818.14/3,889.66 = 1,639.90/x
  3. Step 3: Cross multiply
    2,818.14x = 3,889.66 × 1,639.90
  4. Step 4: Simplify right side
    2,818.14x = 6,378,653.43
  5. Step 5: Solve for x
    x = 6,378,653.43/2,818.14
  6. Step 6: Final answer
    x = 2,263.43

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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.