Home / 2,818.73-3,890.67-1,640.27

Finding the Fourth Proportional to 2,818.73, 3,890.67 and 1,640.27

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Solution

The fourth proportional to 2,818.73, 3,890.67 and 1,640.27 is: 2,264.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.73 : 3,890.67 = 1,640.27 : x
  2. Step 2: Convert to fraction form
    2,818.73/3,890.67 = 1,640.27/x
  3. Step 3: Cross multiply
    2,818.73x = 3,890.67 × 1,640.27
  4. Step 4: Simplify right side
    2,818.73x = 6,381,749.28
  5. Step 5: Solve for x
    x = 6,381,749.28/2,818.73
  6. Step 6: Final answer
    x = 2,264.05

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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.