Home / 2,619.81-3,930.26-976.46

Finding the Fourth Proportional to 2,619.81, 3,930.26 and 976.46

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Solution

The fourth proportional to 2,619.81, 3,930.26 and 976.46 is: 1,464.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.81 : 3,930.26 = 976.46 : x
  2. Step 2: Convert to fraction form
    2,619.81/3,930.26 = 976.46/x
  3. Step 3: Cross multiply
    2,619.81x = 3,930.26 × 976.46
  4. Step 4: Simplify right side
    2,619.81x = 3,837,717.15
  5. Step 5: Solve for x
    x = 3,837,717.15/2,619.81
  6. Step 6: Final answer
    x = 1,464.88

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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.