Home / 3,919.22-5,407.43-2,240.02

Finding the Fourth Proportional to 3,919.22, 5,407.43 and 2,240.02

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Solution

The fourth proportional to 3,919.22, 5,407.43 and 2,240.02 is: 3,090.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.22 : 5,407.43 = 2,240.02 : x
  2. Step 2: Convert to fraction form
    3,919.22/5,407.43 = 2,240.02/x
  3. Step 3: Cross multiply
    3,919.22x = 5,407.43 × 2,240.02
  4. Step 4: Simplify right side
    3,919.22x = 12,112,751.35
  5. Step 5: Solve for x
    x = 12,112,751.35/3,919.22
  6. Step 6: Final answer
    x = 3,090.60

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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.