Home / 5,187.10-7,782.22-2,721.62

Finding the Fourth Proportional to 5,187.10, 7,782.22 and 2,721.62

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Solution

The fourth proportional to 5,187.10, 7,782.22 and 2,721.62 is: 4,083.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.10 : 7,782.22 = 2,721.62 : x
  2. Step 2: Convert to fraction form
    5,187.10/7,782.22 = 2,721.62/x
  3. Step 3: Cross multiply
    5,187.10x = 7,782.22 × 2,721.62
  4. Step 4: Simplify right side
    5,187.10x = 21,180,245.60
  5. Step 5: Solve for x
    x = 21,180,245.60/5,187.10
  6. Step 6: Final answer
    x = 4,083.25

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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.