Home / 3,122.35-4,308.80-1,725.10

Finding the Fourth Proportional to 3,122.35, 4,308.80 and 1,725.10

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Solution

The fourth proportional to 3,122.35, 4,308.80 and 1,725.10 is: 2,380.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.35 : 4,308.80 = 1,725.10 : x
  2. Step 2: Convert to fraction form
    3,122.35/4,308.80 = 1,725.10/x
  3. Step 3: Cross multiply
    3,122.35x = 4,308.80 × 1,725.10
  4. Step 4: Simplify right side
    3,122.35x = 7,433,091.48
  5. Step 5: Solve for x
    x = 7,433,091.48/3,122.35
  6. Step 6: Final answer
    x = 2,380.61

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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.