Home / 8,278.70-12,415.41-2,731.01

Finding the Fourth Proportional to 8,278.70, 12,415.41 and 2,731.01

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Solution

The fourth proportional to 8,278.70, 12,415.41 and 2,731.01 is: 4,095.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278.70 : 12,415.41 = 2,731.01 : x
  2. Step 2: Convert to fraction form
    8,278.70/12,415.41 = 2,731.01/x
  3. Step 3: Cross multiply
    8,278.70x = 12,415.41 × 2,731.01
  4. Step 4: Simplify right side
    8,278.70x = 33,906,546.79
  5. Step 5: Solve for x
    x = 33,906,546.79/8,278.70
  6. Step 6: Final answer
    x = 4,095.64

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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.