Home / 3,247.60-4,872.16-939.04

Finding the Fourth Proportional to 3,247.60, 4,872.16 and 939.04

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Solution

The fourth proportional to 3,247.60, 4,872.16 and 939.04 is: 1,408.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,247.60 : 4,872.16 = 939.04 : x
  2. Step 2: Convert to fraction form
    3,247.60/4,872.16 = 939.04/x
  3. Step 3: Cross multiply
    3,247.60x = 4,872.16 × 939.04
  4. Step 4: Simplify right side
    3,247.60x = 4,575,153.13
  5. Step 5: Solve for x
    x = 4,575,153.13/3,247.60
  6. Step 6: Final answer
    x = 1,408.78

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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.