Home / 3,982.75-5,501.15-2,809.06

Finding the Fourth Proportional to 3,982.75, 5,501.15 and 2,809.06

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Solution

The fourth proportional to 3,982.75, 5,501.15 and 2,809.06 is: 3,880.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982.75 : 5,501.15 = 2,809.06 : x
  2. Step 2: Convert to fraction form
    3,982.75/5,501.15 = 2,809.06/x
  3. Step 3: Cross multiply
    3,982.75x = 5,501.15 × 2,809.06
  4. Step 4: Simplify right side
    3,982.75x = 15,453,043.15
  5. Step 5: Solve for x
    x = 15,453,043.15/3,982.75
  6. Step 6: Final answer
    x = 3,880.00

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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.