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Finding the Fourth Proportional to 8,673.90, 11,966.76 and 5,691.39

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Solution

The fourth proportional to 8,673.90, 11,966.76 and 5,691.39 is: 7,852.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,673.90 : 11,966.76 = 5,691.39 : x
  2. Step 2: Convert to fraction form
    8,673.90/11,966.76 = 5,691.39/x
  3. Step 3: Cross multiply
    8,673.90x = 11,966.76 × 5,691.39
  4. Step 4: Simplify right side
    8,673.90x = 68,107,498.20
  5. Step 5: Solve for x
    x = 68,107,498.20/8,673.90
  6. Step 6: Final answer
    x = 7,852.00

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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.