Home / 2,486.28-3,731.94-1,188.12

Finding the Fourth Proportional to 2,486.28, 3,731.94 and 1,188.12

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Solution

The fourth proportional to 2,486.28, 3,731.94 and 1,188.12 is: 1,783.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486.28 : 3,731.94 = 1,188.12 : x
  2. Step 2: Convert to fraction form
    2,486.28/3,731.94 = 1,188.12/x
  3. Step 3: Cross multiply
    2,486.28x = 3,731.94 × 1,188.12
  4. Step 4: Simplify right side
    2,486.28x = 4,433,992.55
  5. Step 5: Solve for x
    x = 4,433,992.55/2,486.28
  6. Step 6: Final answer
    x = 1,783.38

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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.