Home / 3,765.47-5,195.90-2,172.64

Finding the Fourth Proportional to 3,765.47, 5,195.90 and 2,172.64

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Solution

The fourth proportional to 3,765.47, 5,195.90 and 2,172.64 is: 2,997.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,765.47 : 5,195.90 = 2,172.64 : x
  2. Step 2: Convert to fraction form
    3,765.47/5,195.90 = 2,172.64/x
  3. Step 3: Cross multiply
    3,765.47x = 5,195.90 × 2,172.64
  4. Step 4: Simplify right side
    3,765.47x = 11,288,820.18
  5. Step 5: Solve for x
    x = 11,288,820.18/3,765.47
  6. Step 6: Final answer
    x = 2,997.98

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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.