Home / 3,779.88-5,215.86-2,207.76

Finding the Fourth Proportional to 3,779.88, 5,215.86 and 2,207.76

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Solution

The fourth proportional to 3,779.88, 5,215.86 and 2,207.76 is: 3,046.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,779.88 : 5,215.86 = 2,207.76 : x
  2. Step 2: Convert to fraction form
    3,779.88/5,215.86 = 2,207.76/x
  3. Step 3: Cross multiply
    3,779.88x = 5,215.86 × 2,207.76
  4. Step 4: Simplify right side
    3,779.88x = 11,515,367.07
  5. Step 5: Solve for x
    x = 11,515,367.07/3,779.88
  6. Step 6: Final answer
    x = 3,046.49

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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.