Home / 3,850.64-5,313.50-2,172.12

Finding the Fourth Proportional to 3,850.64, 5,313.50 and 2,172.12

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Solution

The fourth proportional to 3,850.64, 5,313.50 and 2,172.12 is: 2,997.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,850.64 : 5,313.50 = 2,172.12 : x
  2. Step 2: Convert to fraction form
    3,850.64/5,313.50 = 2,172.12/x
  3. Step 3: Cross multiply
    3,850.64x = 5,313.50 × 2,172.12
  4. Step 4: Simplify right side
    3,850.64x = 11,541,536.98
  5. Step 5: Solve for x
    x = 11,541,536.98/3,850.64
  6. Step 6: Final answer
    x = 2,997.30

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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.