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Finding the Fourth Proportional to 8,674.80, 11,961.08 and 8,207.70

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Solution

The fourth proportional to 8,674.80, 11,961.08 and 8,207.70 is: 11,317.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,674.80 : 11,961.08 = 8,207.70 : x
  2. Step 2: Convert to fraction form
    8,674.80/11,961.08 = 8,207.70/x
  3. Step 3: Cross multiply
    8,674.80x = 11,961.08 × 8,207.70
  4. Step 4: Simplify right side
    8,674.80x = 98,172,956.32
  5. Step 5: Solve for x
    x = 98,172,956.32/8,674.80
  6. Step 6: Final answer
    x = 11,317.03

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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.