Home / 2,812.72-4,219.08-1,352.20

Finding the Fourth Proportional to 2,812.72, 4,219.08 and 1,352.20

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Solution

The fourth proportional to 2,812.72, 4,219.08 and 1,352.20 is: 2,028.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.72 : 4,219.08 = 1,352.20 : x
  2. Step 2: Convert to fraction form
    2,812.72/4,219.08 = 1,352.20/x
  3. Step 3: Cross multiply
    2,812.72x = 4,219.08 × 1,352.20
  4. Step 4: Simplify right side
    2,812.72x = 5,705,039.98
  5. Step 5: Solve for x
    x = 5,705,039.98/2,812.72
  6. Step 6: Final answer
    x = 2,028.30

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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.