Home / 2,818.26-3,889.53-1,639.56

Finding the Fourth Proportional to 2,818.26, 3,889.53 and 1,639.56

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Solution

The fourth proportional to 2,818.26, 3,889.53 and 1,639.56 is: 2,262.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.26 : 3,889.53 = 1,639.56 : x
  2. Step 2: Convert to fraction form
    2,818.26/3,889.53 = 1,639.56/x
  3. Step 3: Cross multiply
    2,818.26x = 3,889.53 × 1,639.56
  4. Step 4: Simplify right side
    2,818.26x = 6,377,117.81
  5. Step 5: Solve for x
    x = 6,377,117.81/2,818.26
  6. Step 6: Final answer
    x = 2,262.79

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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.