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Finding the Fourth Proportional to 8,009.79, 12,015.29 and 2,166.31

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Solution

The fourth proportional to 8,009.79, 12,015.29 and 2,166.31 is: 3,249.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,009.79 : 12,015.29 = 2,166.31 : x
  2. Step 2: Convert to fraction form
    8,009.79/12,015.29 = 2,166.31/x
  3. Step 3: Cross multiply
    8,009.79x = 12,015.29 × 2,166.31
  4. Step 4: Simplify right side
    8,009.79x = 26,028,842.88
  5. Step 5: Solve for x
    x = 26,028,842.88/8,009.79
  6. Step 6: Final answer
    x = 3,249.63

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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.