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Finding the Fourth Proportional to 6,657.36, 9,991.92 and 3,880.22

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Solution

The fourth proportional to 6,657.36, 9,991.92 and 3,880.22 is: 5,823.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,657.36 : 9,991.92 = 3,880.22 : x
  2. Step 2: Convert to fraction form
    6,657.36/9,991.92 = 3,880.22/x
  3. Step 3: Cross multiply
    6,657.36x = 9,991.92 × 3,880.22
  4. Step 4: Simplify right side
    6,657.36x = 38,770,847.82
  5. Step 5: Solve for x
    x = 38,770,847.82/6,657.36
  6. Step 6: Final answer
    x = 5,823.76

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1.5x scale

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.