Home / 3,940.56-5,439.96-2,613.60

Finding the Fourth Proportional to 3,940.56, 5,439.96 and 2,613.60

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Solution

The fourth proportional to 3,940.56, 5,439.96 and 2,613.60 is: 3,608.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.56 : 5,439.96 = 2,613.60 : x
  2. Step 2: Convert to fraction form
    3,940.56/5,439.96 = 2,613.60/x
  3. Step 3: Cross multiply
    3,940.56x = 5,439.96 × 2,613.60
  4. Step 4: Simplify right side
    3,940.56x = 14,217,879.46
  5. Step 5: Solve for x
    x = 14,217,879.46/3,940.56
  6. Step 6: Final answer
    x = 3,608.09

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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.