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Finding the Fourth Proportional to 9,108.60, 13,634.10 and 8,820.60

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Solution

The fourth proportional to 9,108.60, 13,634.10 and 8,820.60 is: 13,203.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,108.60 : 13,634.10 = 8,820.60 : x
  2. Step 2: Convert to fraction form
    9,108.60/13,634.10 = 8,820.60/x
  3. Step 3: Cross multiply
    9,108.60x = 13,634.10 × 8,820.60
  4. Step 4: Simplify right side
    9,108.60x = 120,260,942.46
  5. Step 5: Solve for x
    x = 120,260,942.46/9,108.60
  6. Step 6: Final answer
    x = 13,203.01

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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.