Home / 3,122.88-4,309.38-1,725.66

Finding the Fourth Proportional to 3,122.88, 4,309.38 and 1,725.66

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Solution

The fourth proportional to 3,122.88, 4,309.38 and 1,725.66 is: 2,381.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.88 : 4,309.38 = 1,725.66 : x
  2. Step 2: Convert to fraction form
    3,122.88/4,309.38 = 1,725.66/x
  3. Step 3: Cross multiply
    3,122.88x = 4,309.38 × 1,725.66
  4. Step 4: Simplify right side
    3,122.88x = 7,436,524.69
  5. Step 5: Solve for x
    x = 7,436,524.69/3,122.88
  6. Step 6: Final answer
    x = 2,381.30

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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.