Home / 2,180.75-3,271.36-699.62

Finding the Fourth Proportional to 2,180.75, 3,271.36 and 699.62

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Solution

The fourth proportional to 2,180.75, 3,271.36 and 699.62 is: 1,049.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.75 : 3,271.36 = 699.62 : x
  2. Step 2: Convert to fraction form
    2,180.75/3,271.36 = 699.62/x
  3. Step 3: Cross multiply
    2,180.75x = 3,271.36 × 699.62
  4. Step 4: Simplify right side
    2,180.75x = 2,288,690.78
  5. Step 5: Solve for x
    x = 2,288,690.78/2,180.75
  6. Step 6: Final answer
    x = 1,049.50

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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.