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Finding the Fourth Proportional to 8,239.91, 11,376.24 and 6,347.93

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Solution

The fourth proportional to 8,239.91, 11,376.24 and 6,347.93 is: 8,764.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,239.91 : 11,376.24 = 6,347.93 : x
  2. Step 2: Convert to fraction form
    8,239.91/11,376.24 = 6,347.93/x
  3. Step 3: Cross multiply
    8,239.91x = 11,376.24 × 6,347.93
  4. Step 4: Simplify right side
    8,239.91x = 72,215,575.18
  5. Step 5: Solve for x
    x = 72,215,575.18/8,239.91
  6. Step 6: Final answer
    x = 8,764.12

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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.