Home / 6,840.38-10,260.78-2,160.43

Finding the Fourth Proportional to 6,840.38, 10,260.78 and 2,160.43

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Solution

The fourth proportional to 6,840.38, 10,260.78 and 2,160.43 is: 3,240.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,840.38 : 10,260.78 = 2,160.43 : x
  2. Step 2: Convert to fraction form
    6,840.38/10,260.78 = 2,160.43/x
  3. Step 3: Cross multiply
    6,840.38x = 10,260.78 × 2,160.43
  4. Step 4: Simplify right side
    6,840.38x = 22,167,696.94
  5. Step 5: Solve for x
    x = 22,167,696.94/6,840.38
  6. Step 6: Final answer
    x = 3,240.71

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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.