Home / 2,790.50-4,185.86-941.80

Finding the Fourth Proportional to 2,790.50, 4,185.86 and 941.80

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Solution

The fourth proportional to 2,790.50, 4,185.86 and 941.80 is: 1,412.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.50 : 4,185.86 = 941.80 : x
  2. Step 2: Convert to fraction form
    2,790.50/4,185.86 = 941.80/x
  3. Step 3: Cross multiply
    2,790.50x = 4,185.86 × 941.80
  4. Step 4: Simplify right side
    2,790.50x = 3,942,242.95
  5. Step 5: Solve for x
    x = 3,942,242.95/2,790.50
  6. Step 6: Final answer
    x = 1,412.74

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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.