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Finding the Fourth Proportional to 8,663.88, 11,956.26 and 4,886.70

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Solution

The fourth proportional to 8,663.88, 11,956.26 and 4,886.70 is: 6,743.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,663.88 : 11,956.26 = 4,886.70 : x
  2. Step 2: Convert to fraction form
    8,663.88/11,956.26 = 4,886.70/x
  3. Step 3: Cross multiply
    8,663.88x = 11,956.26 × 4,886.70
  4. Step 4: Simplify right side
    8,663.88x = 58,426,655.74
  5. Step 5: Solve for x
    x = 58,426,655.74/8,663.88
  6. Step 6: Final answer
    x = 6,743.71

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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.