Home / 3,120.72-4,682.57-1,822.29

Finding the Fourth Proportional to 3,120.72, 4,682.57 and 1,822.29

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Solution

The fourth proportional to 3,120.72, 4,682.57 and 1,822.29 is: 2,734.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.72 : 4,682.57 = 1,822.29 : x
  2. Step 2: Convert to fraction form
    3,120.72/4,682.57 = 1,822.29/x
  3. Step 3: Cross multiply
    3,120.72x = 4,682.57 × 1,822.29
  4. Step 4: Simplify right side
    3,120.72x = 8,532,991.37
  5. Step 5: Solve for x
    x = 8,532,991.37/3,120.72
  6. Step 6: Final answer
    x = 2,734.30

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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.