Home / 2,379.20-3,283.28-1,331.25

Finding the Fourth Proportional to 2,379.20, 3,283.28 and 1,331.25

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Solution

The fourth proportional to 2,379.20, 3,283.28 and 1,331.25 is: 1,837.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,379.20 : 3,283.28 = 1,331.25 : x
  2. Step 2: Convert to fraction form
    2,379.20/3,283.28 = 1,331.25/x
  3. Step 3: Cross multiply
    2,379.20x = 3,283.28 × 1,331.25
  4. Step 4: Simplify right side
    2,379.20x = 4,370,859.84
  5. Step 5: Solve for x
    x = 4,370,859.84/2,379.20
  6. Step 6: Final answer
    x = 1,837.12

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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.