Home / 3,779.22-5,215.21-2,100.58

Finding the Fourth Proportional to 3,779.22, 5,215.21 and 2,100.58

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Solution

The fourth proportional to 3,779.22, 5,215.21 and 2,100.58 is: 2,898.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,779.22 : 5,215.21 = 2,100.58 : x
  2. Step 2: Convert to fraction form
    3,779.22/5,215.21 = 2,100.58/x
  3. Step 3: Cross multiply
    3,779.22x = 5,215.21 × 2,100.58
  4. Step 4: Simplify right side
    3,779.22x = 10,954,965.82
  5. Step 5: Solve for x
    x = 10,954,965.82/3,779.22
  6. Step 6: Final answer
    x = 2,898.74

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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.