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Finding the Fourth Proportional to 8,476.12, 12,651.83 and 7,881.88

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Solution

The fourth proportional to 8,476.12, 12,651.83 and 7,881.88 is: 11,764.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,476.12 : 12,651.83 = 7,881.88 : x
  2. Step 2: Convert to fraction form
    8,476.12/12,651.83 = 7,881.88/x
  3. Step 3: Cross multiply
    8,476.12x = 12,651.83 × 7,881.88
  4. Step 4: Simplify right side
    8,476.12x = 99,720,205.84
  5. Step 5: Solve for x
    x = 99,720,205.84/8,476.12
  6. Step 6: Final answer
    x = 11,764.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.