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Finding the Fourth Proportional to 8,622.95, 11,902.01 and 8,100.23

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Solution

The fourth proportional to 8,622.95, 11,902.01 and 8,100.23 is: 11,180.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,622.95 : 11,902.01 = 8,100.23 : x
  2. Step 2: Convert to fraction form
    8,622.95/11,902.01 = 8,100.23/x
  3. Step 3: Cross multiply
    8,622.95x = 11,902.01 × 8,100.23
  4. Step 4: Simplify right side
    8,622.95x = 96,408,918.45
  5. Step 5: Solve for x
    x = 96,408,918.45/8,622.95
  6. Step 6: Final answer
    x = 11,180.51

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1.5x scale

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.