Home / 3,928.97-5,421.45-2,436.35

Finding the Fourth Proportional to 3,928.97, 5,421.45 and 2,436.35

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Solution

The fourth proportional to 3,928.97, 5,421.45 and 2,436.35 is: 3,361.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.97 : 5,421.45 = 2,436.35 : x
  2. Step 2: Convert to fraction form
    3,928.97/5,421.45 = 2,436.35/x
  3. Step 3: Cross multiply
    3,928.97x = 5,421.45 × 2,436.35
  4. Step 4: Simplify right side
    3,928.97x = 13,208,522.60
  5. Step 5: Solve for x
    x = 13,208,522.60/3,928.97
  6. Step 6: Final answer
    x = 3,361.83

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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.