Home / 2,640.62-3,635.92-2,345.38

Finding the Fourth Proportional to 2,640.62, 3,635.92 and 2,345.38

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Solution

The fourth proportional to 2,640.62, 3,635.92 and 2,345.38 is: 3,229.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640.62 : 3,635.92 = 2,345.38 : x
  2. Step 2: Convert to fraction form
    2,640.62/3,635.92 = 2,345.38/x
  3. Step 3: Cross multiply
    2,640.62x = 3,635.92 × 2,345.38
  4. Step 4: Simplify right side
    2,640.62x = 8,527,607.89
  5. Step 5: Solve for x
    x = 8,527,607.89/2,640.62
  6. Step 6: Final answer
    x = 3,229.39

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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.