Home / 3,919.34-5,408.48-2,240.53

Finding the Fourth Proportional to 3,919.34, 5,408.48 and 2,240.53

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Solution

The fourth proportional to 3,919.34, 5,408.48 and 2,240.53 is: 3,091.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.34 : 5,408.48 = 2,240.53 : x
  2. Step 2: Convert to fraction form
    3,919.34/5,408.48 = 2,240.53/x
  3. Step 3: Cross multiply
    3,919.34x = 5,408.48 × 2,240.53
  4. Step 4: Simplify right side
    3,919.34x = 12,117,861.69
  5. Step 5: Solve for x
    x = 12,117,861.69/3,919.34
  6. Step 6: Final answer
    x = 3,091.81

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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.