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Finding the Fourth Proportional to 8,612.37, 11,889.99 and 6,579.76

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Solution

The fourth proportional to 8,612.37, 11,889.99 and 6,579.76 is: 9,083.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,612.37 : 11,889.99 = 6,579.76 : x
  2. Step 2: Convert to fraction form
    8,612.37/11,889.99 = 6,579.76/x
  3. Step 3: Cross multiply
    8,612.37x = 11,889.99 × 6,579.76
  4. Step 4: Simplify right side
    8,612.37x = 78,233,280.60
  5. Step 5: Solve for x
    x = 78,233,280.60/8,612.37
  6. Step 6: Final answer
    x = 9,083.83

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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.