Home / 2,240.32-3,090.67-1,399.56

Finding the Fourth Proportional to 2,240.32, 3,090.67 and 1,399.56

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Solution

The fourth proportional to 2,240.32, 3,090.67 and 1,399.56 is: 1,930.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,240.32 : 3,090.67 = 1,399.56 : x
  2. Step 2: Convert to fraction form
    2,240.32/3,090.67 = 1,399.56/x
  3. Step 3: Cross multiply
    2,240.32x = 3,090.67 × 1,399.56
  4. Step 4: Simplify right side
    2,240.32x = 4,325,555.65
  5. Step 5: Solve for x
    x = 4,325,555.65/2,240.32
  6. Step 6: Final answer
    x = 1,930.78

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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.