Home / 3,919.81-5,409.15-2,241.49

Finding the Fourth Proportional to 3,919.81, 5,409.15 and 2,241.49

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Solution

The fourth proportional to 3,919.81, 5,409.15 and 2,241.49 is: 3,093.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.81 : 5,409.15 = 2,241.49 : x
  2. Step 2: Convert to fraction form
    3,919.81/5,409.15 = 2,241.49/x
  3. Step 3: Cross multiply
    3,919.81x = 5,409.15 × 2,241.49
  4. Step 4: Simplify right side
    3,919.81x = 12,124,555.63
  5. Step 5: Solve for x
    x = 12,124,555.63/3,919.81
  6. Step 6: Final answer
    x = 3,093.15

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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.