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Finding the Fourth Proportional to 8,486.76, 11,723.15 and 6,521.88

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Solution

The fourth proportional to 8,486.76, 11,723.15 and 6,521.88 is: 9,008.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,486.76 : 11,723.15 = 6,521.88 : x
  2. Step 2: Convert to fraction form
    8,486.76/11,723.15 = 6,521.88/x
  3. Step 3: Cross multiply
    8,486.76x = 11,723.15 × 6,521.88
  4. Step 4: Simplify right side
    8,486.76x = 76,456,944.91
  5. Step 5: Solve for x
    x = 76,456,944.91/8,486.76
  6. Step 6: Final answer
    x = 9,008.97

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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.