Home / 3,928.21-5,903.12-3,671.35

Finding the Fourth Proportional to 3,928.21, 5,903.12 and 3,671.35

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Solution

The fourth proportional to 3,928.21, 5,903.12 and 3,671.35 is: 5,517.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.21 : 5,903.12 = 3,671.35 : x
  2. Step 2: Convert to fraction form
    3,928.21/5,903.12 = 3,671.35/x
  3. Step 3: Cross multiply
    3,928.21x = 5,903.12 × 3,671.35
  4. Step 4: Simplify right side
    3,928.21x = 21,672,401.26
  5. Step 5: Solve for x
    x = 21,672,401.26/3,928.21
  6. Step 6: Final answer
    x = 5,517.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.