Home / 3,836.58-5,742.49-1,985.15

Finding the Fourth Proportional to 3,836.58, 5,742.49 and 1,985.15

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Solution

The fourth proportional to 3,836.58, 5,742.49 and 1,985.15 is: 2,971.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,836.58 : 5,742.49 = 1,985.15 : x
  2. Step 2: Convert to fraction form
    3,836.58/5,742.49 = 1,985.15/x
  3. Step 3: Cross multiply
    3,836.58x = 5,742.49 × 1,985.15
  4. Step 4: Simplify right side
    3,836.58x = 11,399,704.02
  5. Step 5: Solve for x
    x = 11,399,704.02/3,836.58
  6. Step 6: Final answer
    x = 2,971.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.