Home / 3,940.56-5,437.60-2,261.57

Finding the Fourth Proportional to 3,940.56, 5,437.60 and 2,261.57

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Solution

The fourth proportional to 3,940.56, 5,437.60 and 2,261.57 is: 3,120.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.56 : 5,437.60 = 2,261.57 : x
  2. Step 2: Convert to fraction form
    3,940.56/5,437.60 = 2,261.57/x
  3. Step 3: Cross multiply
    3,940.56x = 5,437.60 × 2,261.57
  4. Step 4: Simplify right side
    3,940.56x = 12,297,480.19
  5. Step 5: Solve for x
    x = 12,297,480.19/3,940.56
  6. Step 6: Final answer
    x = 3,120.74

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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.