Home / 2,120.21-3,179.23-733.08

Finding the Fourth Proportional to 2,120.21, 3,179.23 and 733.08

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Solution

The fourth proportional to 2,120.21, 3,179.23 and 733.08 is: 1,099.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.21 : 3,179.23 = 733.08 : x
  2. Step 2: Convert to fraction form
    2,120.21/3,179.23 = 733.08/x
  3. Step 3: Cross multiply
    2,120.21x = 3,179.23 × 733.08
  4. Step 4: Simplify right side
    2,120.21x = 2,330,628.10
  5. Step 5: Solve for x
    x = 2,330,628.10/2,120.21
  6. Step 6: Final answer
    x = 1,099.25

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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.