Home / 2,619.92-3,930.12-976.07

Finding the Fourth Proportional to 2,619.92, 3,930.12 and 976.07

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Solution

The fourth proportional to 2,619.92, 3,930.12 and 976.07 is: 1,464.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.92 : 3,930.12 = 976.07 : x
  2. Step 2: Convert to fraction form
    2,619.92/3,930.12 = 976.07/x
  3. Step 3: Cross multiply
    2,619.92x = 3,930.12 × 976.07
  4. Step 4: Simplify right side
    2,619.92x = 3,836,072.23
  5. Step 5: Solve for x
    x = 3,836,072.23/2,619.92
  6. Step 6: Final answer
    x = 1,464.20

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1.5x scale

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.