Home / 3,139.48-4,321.60-2,713.91

Finding the Fourth Proportional to 3,139.48, 4,321.60 and 2,713.91

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Solution

The fourth proportional to 3,139.48, 4,321.60 and 2,713.91 is: 3,735.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.48 : 4,321.60 = 2,713.91 : x
  2. Step 2: Convert to fraction form
    3,139.48/4,321.60 = 2,713.91/x
  3. Step 3: Cross multiply
    3,139.48x = 4,321.60 × 2,713.91
  4. Step 4: Simplify right side
    3,139.48x = 11,728,405.06
  5. Step 5: Solve for x
    x = 11,728,405.06/3,139.48
  6. Step 6: Final answer
    x = 3,735.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.