Home / 3,491.85-5,231.54-2,103.28

Finding the Fourth Proportional to 3,491.85, 5,231.54 and 2,103.28

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Solution

The fourth proportional to 3,491.85, 5,231.54 and 2,103.28 is: 3,151.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,491.85 : 5,231.54 = 2,103.28 : x
  2. Step 2: Convert to fraction form
    3,491.85/5,231.54 = 2,103.28/x
  3. Step 3: Cross multiply
    3,491.85x = 5,231.54 × 2,103.28
  4. Step 4: Simplify right side
    3,491.85x = 11,003,394.47
  5. Step 5: Solve for x
    x = 11,003,394.47/3,491.85
  6. Step 6: Final answer
    x = 3,151.16

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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.