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Finding the Fourth Proportional to 8,643.82, 11,934.22 and 6,650.86

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Solution

The fourth proportional to 8,643.82, 11,934.22 and 6,650.86 is: 9,182.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,643.82 : 11,934.22 = 6,650.86 : x
  2. Step 2: Convert to fraction form
    8,643.82/11,934.22 = 6,650.86/x
  3. Step 3: Cross multiply
    8,643.82x = 11,934.22 × 6,650.86
  4. Step 4: Simplify right side
    8,643.82x = 79,372,826.43
  5. Step 5: Solve for x
    x = 79,372,826.43/8,643.82
  6. Step 6: Final answer
    x = 9,182.61

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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.