Home / 5,028.80-6,940.08-2,790.86

Finding the Fourth Proportional to 5,028.80, 6,940.08 and 2,790.86

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Solution

The fourth proportional to 5,028.80, 6,940.08 and 2,790.86 is: 3,851.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,028.80 : 6,940.08 = 2,790.86 : x
  2. Step 2: Convert to fraction form
    5,028.80/6,940.08 = 2,790.86/x
  3. Step 3: Cross multiply
    5,028.80x = 6,940.08 × 2,790.86
  4. Step 4: Simplify right side
    5,028.80x = 19,368,756.97
  5. Step 5: Solve for x
    x = 19,368,756.97/5,028.80
  6. Step 6: Final answer
    x = 3,851.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.