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Finding the Fourth Proportional to 8,619.21, 12,925.17 and 2,694.51

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Solution

The fourth proportional to 8,619.21, 12,925.17 and 2,694.51 is: 4,040.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.21 : 12,925.17 = 2,694.51 : x
  2. Step 2: Convert to fraction form
    8,619.21/12,925.17 = 2,694.51/x
  3. Step 3: Cross multiply
    8,619.21x = 12,925.17 × 2,694.51
  4. Step 4: Simplify right side
    8,619.21x = 34,826,956.58
  5. Step 5: Solve for x
    x = 34,826,956.58/8,619.21
  6. Step 6: Final answer
    x = 4,040.62

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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.