Home / 3,122.46-4,308.96-1,725.21

Finding the Fourth Proportional to 3,122.46, 4,308.96 and 1,725.21

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Solution

The fourth proportional to 3,122.46, 4,308.96 and 1,725.21 is: 2,380.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.46 : 4,308.96 = 1,725.21 : x
  2. Step 2: Convert to fraction form
    3,122.46/4,308.96 = 1,725.21/x
  3. Step 3: Cross multiply
    3,122.46x = 4,308.96 × 1,725.21
  4. Step 4: Simplify right side
    3,122.46x = 7,433,860.88
  5. Step 5: Solve for x
    x = 7,433,860.88/3,122.46
  6. Step 6: Final answer
    x = 2,380.77

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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.