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Finding the Fourth Proportional to 7,266.10, 10,891.05 and 3,105.40

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Solution

The fourth proportional to 7,266.10, 10,891.05 and 3,105.40 is: 4,654.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,266.10 : 10,891.05 = 3,105.40 : x
  2. Step 2: Convert to fraction form
    7,266.10/10,891.05 = 3,105.40/x
  3. Step 3: Cross multiply
    7,266.10x = 10,891.05 × 3,105.40
  4. Step 4: Simplify right side
    7,266.10x = 33,821,066.67
  5. Step 5: Solve for x
    x = 33,821,066.67/7,266.10
  6. Step 6: Final answer
    x = 4,654.64

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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.