Home / 3,920.16-5,409.78-2,241.56

Finding the Fourth Proportional to 3,920.16, 5,409.78 and 2,241.56

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Solution

The fourth proportional to 3,920.16, 5,409.78 and 2,241.56 is: 3,093.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.16 : 5,409.78 = 2,241.56 : x
  2. Step 2: Convert to fraction form
    3,920.16/5,409.78 = 2,241.56/x
  3. Step 3: Cross multiply
    3,920.16x = 5,409.78 × 2,241.56
  4. Step 4: Simplify right side
    3,920.16x = 12,126,346.46
  5. Step 5: Solve for x
    x = 12,126,346.46/3,920.16
  6. Step 6: Final answer
    x = 3,093.33

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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.