Home / 8,208.29-12,309.85-2,660.37

Finding the Fourth Proportional to 8,208.29, 12,309.85 and 2,660.37

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Solution

The fourth proportional to 8,208.29, 12,309.85 and 2,660.37 is: 3,989.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,208.29 : 12,309.85 = 2,660.37 : x
  2. Step 2: Convert to fraction form
    8,208.29/12,309.85 = 2,660.37/x
  3. Step 3: Cross multiply
    8,208.29x = 12,309.85 × 2,660.37
  4. Step 4: Simplify right side
    8,208.29x = 32,748,755.64
  5. Step 5: Solve for x
    x = 32,748,755.64/8,208.29
  6. Step 6: Final answer
    x = 3,989.72

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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.