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Finding the Fourth Proportional to 8,658.56, 12,992.84 and 3,660.56

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Solution

The fourth proportional to 8,658.56, 12,992.84 and 3,660.56 is: 5,492.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,658.56 : 12,992.84 = 3,660.56 : x
  2. Step 2: Convert to fraction form
    8,658.56/12,992.84 = 3,660.56/x
  3. Step 3: Cross multiply
    8,658.56x = 12,992.84 × 3,660.56
  4. Step 4: Simplify right side
    8,658.56x = 47,561,070.39
  5. Step 5: Solve for x
    x = 47,561,070.39/8,658.56
  6. Step 6: Final answer
    x = 5,492.95

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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.