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Finding the Fourth Proportional to 8,604.64, 12,895.62 and 3,407.68

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Solution

The fourth proportional to 8,604.64, 12,895.62 and 3,407.68 is: 5,107.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,604.64 : 12,895.62 = 3,407.68 : x
  2. Step 2: Convert to fraction form
    8,604.64/12,895.62 = 3,407.68/x
  3. Step 3: Cross multiply
    8,604.64x = 12,895.62 × 3,407.68
  4. Step 4: Simplify right side
    8,604.64x = 43,944,146.36
  5. Step 5: Solve for x
    x = 43,944,146.36/8,604.64
  6. Step 6: Final answer
    x = 5,107.03

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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.