Home / 5,028.80-6,939.48-2,790.50

Finding the Fourth Proportional to 5,028.80, 6,939.48 and 2,790.50

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Solution

The fourth proportional to 5,028.80, 6,939.48 and 2,790.50 is: 3,850.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,028.80 : 6,939.48 = 2,790.50 : x
  2. Step 2: Convert to fraction form
    5,028.80/6,939.48 = 2,790.50/x
  3. Step 3: Cross multiply
    5,028.80x = 6,939.48 × 2,790.50
  4. Step 4: Simplify right side
    5,028.80x = 19,364,618.94
  5. Step 5: Solve for x
    x = 19,364,618.94/5,028.80
  6. Step 6: Final answer
    x = 3,850.74

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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.