Home / 7,728.50-11,591.40-3,568.15

Finding the Fourth Proportional to 7,728.50, 11,591.40 and 3,568.15

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Solution

The fourth proportional to 7,728.50, 11,591.40 and 3,568.15 is: 5,351.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,728.50 : 11,591.40 = 3,568.15 : x
  2. Step 2: Convert to fraction form
    7,728.50/11,591.40 = 3,568.15/x
  3. Step 3: Cross multiply
    7,728.50x = 11,591.40 × 3,568.15
  4. Step 4: Simplify right side
    7,728.50x = 41,359,811.55
  5. Step 5: Solve for x
    x = 41,359,811.55/7,728.50
  6. Step 6: Final answer
    x = 5,351.60

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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.