Home / 3,170.38-4,376.33-2,838.21

Finding the Fourth Proportional to 3,170.38, 4,376.33 and 2,838.21

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Solution

The fourth proportional to 3,170.38, 4,376.33 and 2,838.21 is: 3,917.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,170.38 : 4,376.33 = 2,838.21 : x
  2. Step 2: Convert to fraction form
    3,170.38/4,376.33 = 2,838.21/x
  3. Step 3: Cross multiply
    3,170.38x = 4,376.33 × 2,838.21
  4. Step 4: Simplify right side
    3,170.38x = 12,420,929.38
  5. Step 5: Solve for x
    x = 12,420,929.38/3,170.38
  6. Step 6: Final answer
    x = 3,917.80

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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.