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Finding the Fourth Proportional to 8,000.57, 11,979.84 and 5,647.88

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Solution

The fourth proportional to 8,000.57, 11,979.84 and 5,647.88 is: 8,456.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,000.57 : 11,979.84 = 5,647.88 : x
  2. Step 2: Convert to fraction form
    8,000.57/11,979.84 = 5,647.88/x
  3. Step 3: Cross multiply
    8,000.57x = 11,979.84 × 5,647.88
  4. Step 4: Simplify right side
    8,000.57x = 67,660,698.74
  5. Step 5: Solve for x
    x = 67,660,698.74/8,000.57
  6. Step 6: Final answer
    x = 8,456.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.