Home / 8,126.81-12,188.96-2,579.43

Finding the Fourth Proportional to 8,126.81, 12,188.96 and 2,579.43

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Solution

The fourth proportional to 8,126.81, 12,188.96 and 2,579.43 is: 3,868.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,126.81 : 12,188.96 = 2,579.43 : x
  2. Step 2: Convert to fraction form
    8,126.81/12,188.96 = 2,579.43/x
  3. Step 3: Cross multiply
    8,126.81x = 12,188.96 × 2,579.43
  4. Step 4: Simplify right side
    8,126.81x = 31,440,529.83
  5. Step 5: Solve for x
    x = 31,440,529.83/8,126.81
  6. Step 6: Final answer
    x = 3,868.74

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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.