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Finding the Fourth Proportional to 8,589.92, 12,867.80 and 5,659.34

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Solution

The fourth proportional to 8,589.92, 12,867.80 and 5,659.34 is: 8,477.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,589.92 : 12,867.80 = 5,659.34 : x
  2. Step 2: Convert to fraction form
    8,589.92/12,867.80 = 5,659.34/x
  3. Step 3: Cross multiply
    8,589.92x = 12,867.80 × 5,659.34
  4. Step 4: Simplify right side
    8,589.92x = 72,823,162.62
  5. Step 5: Solve for x
    x = 72,823,162.62/8,589.92
  6. Step 6: Final answer
    x = 8,477.75

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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.