Home / 3,427.84-5,131.68-2,125.12

Finding the Fourth Proportional to 3,427.84, 5,131.68 and 2,125.12

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Solution

The fourth proportional to 3,427.84, 5,131.68 and 2,125.12 is: 3,181.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,427.84 : 5,131.68 = 2,125.12 : x
  2. Step 2: Convert to fraction form
    3,427.84/5,131.68 = 2,125.12/x
  3. Step 3: Cross multiply
    3,427.84x = 5,131.68 × 2,125.12
  4. Step 4: Simplify right side
    3,427.84x = 10,905,435.80
  5. Step 5: Solve for x
    x = 10,905,435.80/3,427.84
  6. Step 6: Final answer
    x = 3,181.43

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1.5x scale

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.