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Finding the Fourth Proportional to 8,778.88, 13,168.32 and 3,516.28

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Solution

The fourth proportional to 8,778.88, 13,168.32 and 3,516.28 is: 5,274.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,778.88 : 13,168.32 = 3,516.28 : x
  2. Step 2: Convert to fraction form
    8,778.88/13,168.32 = 3,516.28/x
  3. Step 3: Cross multiply
    8,778.88x = 13,168.32 × 3,516.28
  4. Step 4: Simplify right side
    8,778.88x = 46,303,500.25
  5. Step 5: Solve for x
    x = 46,303,500.25/8,778.88
  6. Step 6: Final answer
    x = 5,274.42

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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.