Home / 3,779.39-5,215.66-2,100.74

Finding the Fourth Proportional to 3,779.39, 5,215.66 and 2,100.74

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Solution

The fourth proportional to 3,779.39, 5,215.66 and 2,100.74 is: 2,899.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,779.39 : 5,215.66 = 2,100.74 : x
  2. Step 2: Convert to fraction form
    3,779.39/5,215.66 = 2,100.74/x
  3. Step 3: Cross multiply
    3,779.39x = 5,215.66 × 2,100.74
  4. Step 4: Simplify right side
    3,779.39x = 10,956,714.26
  5. Step 5: Solve for x
    x = 10,956,714.26/3,779.39
  6. Step 6: Final answer
    x = 2,899.07

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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.