Home / 3,003.90-4,148.22-2,840.28

Finding the Fourth Proportional to 3,003.90, 4,148.22 and 2,840.28

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Solution

The fourth proportional to 3,003.90, 4,148.22 and 2,840.28 is: 3,922.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,003.90 : 4,148.22 = 2,840.28 : x
  2. Step 2: Convert to fraction form
    3,003.90/4,148.22 = 2,840.28/x
  3. Step 3: Cross multiply
    3,003.90x = 4,148.22 × 2,840.28
  4. Step 4: Simplify right side
    3,003.90x = 11,782,106.30
  5. Step 5: Solve for x
    x = 11,782,106.30/3,003.90
  6. Step 6: Final answer
    x = 3,922.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.