Home / 3,768.80-5,201.28-2,090.60

Finding the Fourth Proportional to 3,768.80, 5,201.28 and 2,090.60

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Solution

The fourth proportional to 3,768.80, 5,201.28 and 2,090.60 is: 2,885.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,768.80 : 5,201.28 = 2,090.60 : x
  2. Step 2: Convert to fraction form
    3,768.80/5,201.28 = 2,090.60/x
  3. Step 3: Cross multiply
    3,768.80x = 5,201.28 × 2,090.60
  4. Step 4: Simplify right side
    3,768.80x = 10,873,795.97
  5. Step 5: Solve for x
    x = 10,873,795.97/3,768.80
  6. Step 6: Final answer
    x = 2,885.21

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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.