Home / 3,760.60-5,188.94-2,189.20

Finding the Fourth Proportional to 3,760.60, 5,188.94 and 2,189.20

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Solution

The fourth proportional to 3,760.60, 5,188.94 and 2,189.20 is: 3,020.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,760.60 : 5,188.94 = 2,189.20 : x
  2. Step 2: Convert to fraction form
    3,760.60/5,188.94 = 2,189.20/x
  3. Step 3: Cross multiply
    3,760.60x = 5,188.94 × 2,189.20
  4. Step 4: Simplify right side
    3,760.60x = 11,359,627.45
  5. Step 5: Solve for x
    x = 11,359,627.45/3,760.60
  6. Step 6: Final answer
    x = 3,020.70

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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.