Home / 8,288.39-12,431.21-2,665.31

Finding the Fourth Proportional to 8,288.39, 12,431.21 and 2,665.31

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Solution

The fourth proportional to 8,288.39, 12,431.21 and 2,665.31 is: 3,997.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,288.39 : 12,431.21 = 2,665.31 : x
  2. Step 2: Convert to fraction form
    8,288.39/12,431.21 = 2,665.31/x
  3. Step 3: Cross multiply
    8,288.39x = 12,431.21 × 2,665.31
  4. Step 4: Simplify right side
    8,288.39x = 33,132,952.84
  5. Step 5: Solve for x
    x = 33,132,952.84/8,288.39
  6. Step 6: Final answer
    x = 3,997.51

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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.