Home / 3,779.21-5,215.62-2,186.41

Finding the Fourth Proportional to 3,779.21, 5,215.62 and 2,186.41

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Solution

The fourth proportional to 3,779.21, 5,215.62 and 2,186.41 is: 3,017.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,779.21 : 5,215.62 = 2,186.41 : x
  2. Step 2: Convert to fraction form
    3,779.21/5,215.62 = 2,186.41/x
  3. Step 3: Cross multiply
    3,779.21x = 5,215.62 × 2,186.41
  4. Step 4: Simplify right side
    3,779.21x = 11,403,448.21
  5. Step 5: Solve for x
    x = 11,403,448.21/3,779.21
  6. Step 6: Final answer
    x = 3,017.42

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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.