Home / 3,918.63-5,408.16-2,240.28

Finding the Fourth Proportional to 3,918.63, 5,408.16 and 2,240.28

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Solution

The fourth proportional to 3,918.63, 5,408.16 and 2,240.28 is: 3,091.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.63 : 5,408.16 = 2,240.28 : x
  2. Step 2: Convert to fraction form
    3,918.63/5,408.16 = 2,240.28/x
  3. Step 3: Cross multiply
    3,918.63x = 5,408.16 × 2,240.28
  4. Step 4: Simplify right side
    3,918.63x = 12,115,792.68
  5. Step 5: Solve for x
    x = 12,115,792.68/3,918.63
  6. Step 6: Final answer
    x = 3,091.84

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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.