Home / 3,120.66-4,282.74-2,825.28

Finding the Fourth Proportional to 3,120.66, 4,282.74 and 2,825.28

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Solution

The fourth proportional to 3,120.66, 4,282.74 and 2,825.28 is: 3,877.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.66 : 4,282.74 = 2,825.28 : x
  2. Step 2: Convert to fraction form
    3,120.66/4,282.74 = 2,825.28/x
  3. Step 3: Cross multiply
    3,120.66x = 4,282.74 × 2,825.28
  4. Step 4: Simplify right side
    3,120.66x = 12,099,939.67
  5. Step 5: Solve for x
    x = 12,099,939.67/3,120.66
  6. Step 6: Final answer
    x = 3,877.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.