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Finding the Fourth Proportional to 8,676.59, 11,978.82 and 5,697.63

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Solution

The fourth proportional to 8,676.59, 11,978.82 and 5,697.63 is: 7,866.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,676.59 : 11,978.82 = 5,697.63 : x
  2. Step 2: Convert to fraction form
    8,676.59/11,978.82 = 5,697.63/x
  3. Step 3: Cross multiply
    8,676.59x = 11,978.82 × 5,697.63
  4. Step 4: Simplify right side
    8,676.59x = 68,250,884.20
  5. Step 5: Solve for x
    x = 68,250,884.20/8,676.59
  6. Step 6: Final answer
    x = 7,866.10

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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.