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Finding the Fourth Proportional to 8,656.60, 11,932.08 and 6,764.88

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Solution

The fourth proportional to 8,656.60, 11,932.08 and 6,764.88 is: 9,324.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,656.60 : 11,932.08 = 6,764.88 : x
  2. Step 2: Convert to fraction form
    8,656.60/11,932.08 = 6,764.88/x
  3. Step 3: Cross multiply
    8,656.60x = 11,932.08 × 6,764.88
  4. Step 4: Simplify right side
    8,656.60x = 80,719,089.35
  5. Step 5: Solve for x
    x = 80,719,089.35/8,656.60
  6. Step 6: Final answer
    x = 9,324.57

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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.