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Finding the Fourth Proportional to 8,652.84, 12,979.44 and 3,106.68

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Solution

The fourth proportional to 8,652.84, 12,979.44 and 3,106.68 is: 4,660.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,652.84 : 12,979.44 = 3,106.68 : x
  2. Step 2: Convert to fraction form
    8,652.84/12,979.44 = 3,106.68/x
  3. Step 3: Cross multiply
    8,652.84x = 12,979.44 × 3,106.68
  4. Step 4: Simplify right side
    8,652.84x = 40,322,966.66
  5. Step 5: Solve for x
    x = 40,322,966.66/8,652.84
  6. Step 6: Final answer
    x = 4,660.08

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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.