Home / 3,126.78-4,691.25-2,090.94

Finding the Fourth Proportional to 3,126.78, 4,691.25 and 2,090.94

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Solution

The fourth proportional to 3,126.78, 4,691.25 and 2,090.94 is: 3,137.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.78 : 4,691.25 = 2,090.94 : x
  2. Step 2: Convert to fraction form
    3,126.78/4,691.25 = 2,090.94/x
  3. Step 3: Cross multiply
    3,126.78x = 4,691.25 × 2,090.94
  4. Step 4: Simplify right side
    3,126.78x = 9,809,122.28
  5. Step 5: Solve for x
    x = 9,809,122.28/3,126.78
  6. Step 6: Final answer
    x = 3,137.13

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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.