Home / 3,780.91-5,666.19-2,855.71

Finding the Fourth Proportional to 3,780.91, 5,666.19 and 2,855.71

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Solution

The fourth proportional to 3,780.91, 5,666.19 and 2,855.71 is: 4,279.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.91 : 5,666.19 = 2,855.71 : x
  2. Step 2: Convert to fraction form
    3,780.91/5,666.19 = 2,855.71/x
  3. Step 3: Cross multiply
    3,780.91x = 5,666.19 × 2,855.71
  4. Step 4: Simplify right side
    3,780.91x = 16,180,995.44
  5. Step 5: Solve for x
    x = 16,180,995.44/3,780.91
  6. Step 6: Final answer
    x = 4,279.66

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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.