Home / 3,579.38-4,941.39-2,780.91

Finding the Fourth Proportional to 3,579.38, 4,941.39 and 2,780.91

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Solution

The fourth proportional to 3,579.38, 4,941.39 and 2,780.91 is: 3,839.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,579.38 : 4,941.39 = 2,780.91 : x
  2. Step 2: Convert to fraction form
    3,579.38/4,941.39 = 2,780.91/x
  3. Step 3: Cross multiply
    3,579.38x = 4,941.39 × 2,780.91
  4. Step 4: Simplify right side
    3,579.38x = 13,741,560.86
  5. Step 5: Solve for x
    x = 13,741,560.86/3,579.38
  6. Step 6: Final answer
    x = 3,839.09

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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.