Home / 2,555.38-3,826.47-2,143.54

Finding the Fourth Proportional to 2,555.38, 3,826.47 and 2,143.54

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Solution

The fourth proportional to 2,555.38, 3,826.47 and 2,143.54 is: 3,209.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,555.38 : 3,826.47 = 2,143.54 : x
  2. Step 2: Convert to fraction form
    2,555.38/3,826.47 = 2,143.54/x
  3. Step 3: Cross multiply
    2,555.38x = 3,826.47 × 2,143.54
  4. Step 4: Simplify right side
    2,555.38x = 8,202,191.50
  5. Step 5: Solve for x
    x = 8,202,191.50/2,555.38
  6. Step 6: Final answer
    x = 3,209.77

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1.5x scale

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.