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Finding the Fourth Proportional to 8,668.72, 11,962.82 and 4,689.83

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Solution

The fourth proportional to 8,668.72, 11,962.82 and 4,689.83 is: 6,471.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.72 : 11,962.82 = 4,689.83 : x
  2. Step 2: Convert to fraction form
    8,668.72/11,962.82 = 4,689.83/x
  3. Step 3: Cross multiply
    8,668.72x = 11,962.82 × 4,689.83
  4. Step 4: Simplify right side
    8,668.72x = 56,103,633.75
  5. Step 5: Solve for x
    x = 56,103,633.75/8,668.72
  6. Step 6: Final answer
    x = 6,471.96

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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.