Home / 3,928.19-5,418.54-2,334.26

Finding the Fourth Proportional to 3,928.19, 5,418.54 and 2,334.26

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Solution

The fourth proportional to 3,928.19, 5,418.54 and 2,334.26 is: 3,219.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.19 : 5,418.54 = 2,334.26 : x
  2. Step 2: Convert to fraction form
    3,928.19/5,418.54 = 2,334.26/x
  3. Step 3: Cross multiply
    3,928.19x = 5,418.54 × 2,334.26
  4. Step 4: Simplify right side
    3,928.19x = 12,648,281.18
  5. Step 5: Solve for x
    x = 12,648,281.18/3,928.19
  6. Step 6: Final answer
    x = 3,219.88

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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.