Home / 3,757.12-5,185.08-2,078.80

Finding the Fourth Proportional to 3,757.12, 5,185.08 and 2,078.80

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Solution

The fourth proportional to 3,757.12, 5,185.08 and 2,078.80 is: 2,868.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,757.12 : 5,185.08 = 2,078.80 : x
  2. Step 2: Convert to fraction form
    3,757.12/5,185.08 = 2,078.80/x
  3. Step 3: Cross multiply
    3,757.12x = 5,185.08 × 2,078.80
  4. Step 4: Simplify right side
    3,757.12x = 10,778,744.30
  5. Step 5: Solve for x
    x = 10,778,744.30/3,757.12
  6. Step 6: Final answer
    x = 2,868.88

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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.