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Finding the Fourth Proportional to 8,654.94, 12,983.94 and 4,272.39

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Solution

The fourth proportional to 8,654.94, 12,983.94 and 4,272.39 is: 6,409.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,654.94 : 12,983.94 = 4,272.39 : x
  2. Step 2: Convert to fraction form
    8,654.94/12,983.94 = 4,272.39/x
  3. Step 3: Cross multiply
    8,654.94x = 12,983.94 × 4,272.39
  4. Step 4: Simplify right side
    8,654.94x = 55,472,455.42
  5. Step 5: Solve for x
    x = 55,472,455.42/8,654.94
  6. Step 6: Final answer
    x = 6,409.34

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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.