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Finding the Fourth Proportional to 8,461.17, 11,673.57 and 4,921.47

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Solution

The fourth proportional to 8,461.17, 11,673.57 and 4,921.47 is: 6,789.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,461.17 : 11,673.57 = 4,921.47 : x
  2. Step 2: Convert to fraction form
    8,461.17/11,673.57 = 4,921.47/x
  3. Step 3: Cross multiply
    8,461.17x = 11,673.57 × 4,921.47
  4. Step 4: Simplify right side
    8,461.17x = 57,451,124.55
  5. Step 5: Solve for x
    x = 57,451,124.55/8,461.17
  6. Step 6: Final answer
    x = 6,789.97

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.