Home / 2,790.78-4,186.61-941.76

Finding the Fourth Proportional to 2,790.78, 4,186.61 and 941.76

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Solution

The fourth proportional to 2,790.78, 4,186.61 and 941.76 is: 1,412.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.78 : 4,186.61 = 941.76 : x
  2. Step 2: Convert to fraction form
    2,790.78/4,186.61 = 941.76/x
  3. Step 3: Cross multiply
    2,790.78x = 4,186.61 × 941.76
  4. Step 4: Simplify right side
    2,790.78x = 3,942,756.19
  5. Step 5: Solve for x
    x = 3,942,756.19/2,790.78
  6. Step 6: Final answer
    x = 1,412.78

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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.