Home / 3,149.40-4,725.90-2,176.20

Finding the Fourth Proportional to 3,149.40, 4,725.90 and 2,176.20

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Solution

The fourth proportional to 3,149.40, 4,725.90 and 2,176.20 is: 3,265.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,149.40 : 4,725.90 = 2,176.20 : x
  2. Step 2: Convert to fraction form
    3,149.40/4,725.90 = 2,176.20/x
  3. Step 3: Cross multiply
    3,149.40x = 4,725.90 × 2,176.20
  4. Step 4: Simplify right side
    3,149.40x = 10,284,503.58
  5. Step 5: Solve for x
    x = 10,284,503.58/3,149.40
  6. Step 6: Final answer
    x = 3,265.54

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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.