Home / 3,771.10-5,655.30-1,921.60

Finding the Fourth Proportional to 3,771.10, 5,655.30 and 1,921.60

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Solution

The fourth proportional to 3,771.10, 5,655.30 and 1,921.60 is: 2,881.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,771.10 : 5,655.30 = 1,921.60 : x
  2. Step 2: Convert to fraction form
    3,771.10/5,655.30 = 1,921.60/x
  3. Step 3: Cross multiply
    3,771.10x = 5,655.30 × 1,921.60
  4. Step 4: Simplify right side
    3,771.10x = 10,867,224.48
  5. Step 5: Solve for x
    x = 10,867,224.48/3,771.10
  6. Step 6: Final answer
    x = 2,881.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.