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Finding the Fourth Proportional to 9,179.64, 12,672.24 and 6,347.88

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Solution

The fourth proportional to 9,179.64, 12,672.24 and 6,347.88 is: 8,763.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,179.64 : 12,672.24 = 6,347.88 : x
  2. Step 2: Convert to fraction form
    9,179.64/12,672.24 = 6,347.88/x
  3. Step 3: Cross multiply
    9,179.64x = 12,672.24 × 6,347.88
  4. Step 4: Simplify right side
    9,179.64x = 80,441,858.85
  5. Step 5: Solve for x
    x = 80,441,858.85/9,179.64
  6. Step 6: Final answer
    x = 8,763.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.