Home / 3,790.56-5,687.78-2,126.56

Finding the Fourth Proportional to 3,790.56, 5,687.78 and 2,126.56

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Solution

The fourth proportional to 3,790.56, 5,687.78 and 2,126.56 is: 3,190.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,790.56 : 5,687.78 = 2,126.56 : x
  2. Step 2: Convert to fraction form
    3,790.56/5,687.78 = 2,126.56/x
  3. Step 3: Cross multiply
    3,790.56x = 5,687.78 × 2,126.56
  4. Step 4: Simplify right side
    3,790.56x = 12,095,397.84
  5. Step 5: Solve for x
    x = 12,095,397.84/3,790.56
  6. Step 6: Final answer
    x = 3,190.93

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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.