Home / 3,980.80-5,974.44-1,515.97

Finding the Fourth Proportional to 3,980.80, 5,974.44 and 1,515.97

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Solution

The fourth proportional to 3,980.80, 5,974.44 and 1,515.97 is: 2,275.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.80 : 5,974.44 = 1,515.97 : x
  2. Step 2: Convert to fraction form
    3,980.80/5,974.44 = 1,515.97/x
  3. Step 3: Cross multiply
    3,980.80x = 5,974.44 × 1,515.97
  4. Step 4: Simplify right side
    3,980.80x = 9,057,071.81
  5. Step 5: Solve for x
    x = 9,057,071.81/3,980.80
  6. Step 6: Final answer
    x = 2,275.19

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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.