Home / 2,790.52-4,186.03-1,992.43

Finding the Fourth Proportional to 2,790.52, 4,186.03 and 1,992.43

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Solution

The fourth proportional to 2,790.52, 4,186.03 and 1,992.43 is: 2,988.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.52 : 4,186.03 = 1,992.43 : x
  2. Step 2: Convert to fraction form
    2,790.52/4,186.03 = 1,992.43/x
  3. Step 3: Cross multiply
    2,790.52x = 4,186.03 × 1,992.43
  4. Step 4: Simplify right side
    2,790.52x = 8,340,371.75
  5. Step 5: Solve for x
    x = 8,340,371.75/2,790.52
  6. Step 6: Final answer
    x = 2,988.82

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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.