Home / 3,780.23-5,215.90-2,287.85

Finding the Fourth Proportional to 3,780.23, 5,215.90 and 2,287.85

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Solution

The fourth proportional to 3,780.23, 5,215.90 and 2,287.85 is: 3,156.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.23 : 5,215.90 = 2,287.85 : x
  2. Step 2: Convert to fraction form
    3,780.23/5,215.90 = 2,287.85/x
  3. Step 3: Cross multiply
    3,780.23x = 5,215.90 × 2,287.85
  4. Step 4: Simplify right side
    3,780.23x = 11,933,196.82
  5. Step 5: Solve for x
    x = 11,933,196.82/3,780.23
  6. Step 6: Final answer
    x = 3,156.74

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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.