Home / 2,399.58-3,311.42-1,351.64

Finding the Fourth Proportional to 2,399.58, 3,311.42 and 1,351.64

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Solution

The fourth proportional to 2,399.58, 3,311.42 and 1,351.64 is: 1,865.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,399.58 : 3,311.42 = 1,351.64 : x
  2. Step 2: Convert to fraction form
    2,399.58/3,311.42 = 1,351.64/x
  3. Step 3: Cross multiply
    2,399.58x = 3,311.42 × 1,351.64
  4. Step 4: Simplify right side
    2,399.58x = 4,475,824.41
  5. Step 5: Solve for x
    x = 4,475,824.41/2,399.58
  6. Step 6: Final answer
    x = 1,865.25

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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.