Home / 2,129.48-3,190.06-1,396.84

Finding the Fourth Proportional to 2,129.48, 3,190.06 and 1,396.84

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Solution

The fourth proportional to 2,129.48, 3,190.06 and 1,396.84 is: 2,092.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.48 : 3,190.06 = 1,396.84 : x
  2. Step 2: Convert to fraction form
    2,129.48/3,190.06 = 1,396.84/x
  3. Step 3: Cross multiply
    2,129.48x = 3,190.06 × 1,396.84
  4. Step 4: Simplify right side
    2,129.48x = 4,456,003.41
  5. Step 5: Solve for x
    x = 4,456,003.41/2,129.48
  6. Step 6: Final answer
    x = 2,092.53

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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.