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Finding the Fourth Proportional to 9,105.90, 13,662.90 and 3,266.70

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Solution

The fourth proportional to 9,105.90, 13,662.90 and 3,266.70 is: 4,901.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,105.90 : 13,662.90 = 3,266.70 : x
  2. Step 2: Convert to fraction form
    9,105.90/13,662.90 = 3,266.70/x
  3. Step 3: Cross multiply
    9,105.90x = 13,662.90 × 3,266.70
  4. Step 4: Simplify right side
    9,105.90x = 44,632,595.43
  5. Step 5: Solve for x
    x = 44,632,595.43/9,105.90
  6. Step 6: Final answer
    x = 4,901.50

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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.