Home / 2,812.44-4,219.14-864.60

Finding the Fourth Proportional to 2,812.44, 4,219.14 and 864.60

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Solution

The fourth proportional to 2,812.44, 4,219.14 and 864.60 is: 1,297.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.44 : 4,219.14 = 864.60 : x
  2. Step 2: Convert to fraction form
    2,812.44/4,219.14 = 864.60/x
  3. Step 3: Cross multiply
    2,812.44x = 4,219.14 × 864.60
  4. Step 4: Simplify right side
    2,812.44x = 3,647,868.44
  5. Step 5: Solve for x
    x = 3,647,868.44/2,812.44
  6. Step 6: Final answer
    x = 1,297.05

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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.