Home / 3,850.84-5,314.68-2,172.36

Finding the Fourth Proportional to 3,850.84, 5,314.68 and 2,172.36

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Solution

The fourth proportional to 3,850.84, 5,314.68 and 2,172.36 is: 2,998.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,850.84 : 5,314.68 = 2,172.36 : x
  2. Step 2: Convert to fraction form
    3,850.84/5,314.68 = 2,172.36/x
  3. Step 3: Cross multiply
    3,850.84x = 5,314.68 × 2,172.36
  4. Step 4: Simplify right side
    3,850.84x = 11,545,398.24
  5. Step 5: Solve for x
    x = 11,545,398.24/3,850.84
  6. Step 6: Final answer
    x = 2,998.15

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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.