Home / 3,919.15-5,407.86-2,240.29

Finding the Fourth Proportional to 3,919.15, 5,407.86 and 2,240.29

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Solution

The fourth proportional to 3,919.15, 5,407.86 and 2,240.29 is: 3,091.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.15 : 5,407.86 = 2,240.29 : x
  2. Step 2: Convert to fraction form
    3,919.15/5,407.86 = 2,240.29/x
  3. Step 3: Cross multiply
    3,919.15x = 5,407.86 × 2,240.29
  4. Step 4: Simplify right side
    3,919.15x = 12,115,174.68
  5. Step 5: Solve for x
    x = 12,115,174.68/3,919.15
  6. Step 6: Final answer
    x = 3,091.28

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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.