Home / 3,902.20-5,385.03-2,409.76

Finding the Fourth Proportional to 3,902.20, 5,385.03 and 2,409.76

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Solution

The fourth proportional to 3,902.20, 5,385.03 and 2,409.76 is: 3,325.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.20 : 5,385.03 = 2,409.76 : x
  2. Step 2: Convert to fraction form
    3,902.20/5,385.03 = 2,409.76/x
  3. Step 3: Cross multiply
    3,902.20x = 5,385.03 × 2,409.76
  4. Step 4: Simplify right side
    3,902.20x = 12,976,629.89
  5. Step 5: Solve for x
    x = 12,976,629.89/3,902.20
  6. Step 6: Final answer
    x = 3,325.47

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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.