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Finding the Fourth Proportional to 8,682.84, 11,981.79 and 5,325.66

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Solution

The fourth proportional to 8,682.84, 11,981.79 and 5,325.66 is: 7,349.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,682.84 : 11,981.79 = 5,325.66 : x
  2. Step 2: Convert to fraction form
    8,682.84/11,981.79 = 5,325.66/x
  3. Step 3: Cross multiply
    8,682.84x = 11,981.79 × 5,325.66
  4. Step 4: Simplify right side
    8,682.84x = 63,810,939.73
  5. Step 5: Solve for x
    x = 63,810,939.73/8,682.84
  6. Step 6: Final answer
    x = 7,349.09

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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.