Home / 5,720.90-7,893.92-3,203.11

Finding the Fourth Proportional to 5,720.90, 7,893.92 and 3,203.11

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Solution

The fourth proportional to 5,720.90, 7,893.92 and 3,203.11 is: 4,419.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,720.90 : 7,893.92 = 3,203.11 : x
  2. Step 2: Convert to fraction form
    5,720.90/7,893.92 = 3,203.11/x
  3. Step 3: Cross multiply
    5,720.90x = 7,893.92 × 3,203.11
  4. Step 4: Simplify right side
    5,720.90x = 25,285,111.97
  5. Step 5: Solve for x
    x = 25,285,111.97/5,720.90
  6. Step 6: Final answer
    x = 4,419.78

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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.