Home / 2,976.30-4,107.72-1,930.14

Finding the Fourth Proportional to 2,976.30, 4,107.72 and 1,930.14

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Solution

The fourth proportional to 2,976.30, 4,107.72 and 1,930.14 is: 2,663.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,976.30 : 4,107.72 = 1,930.14 : x
  2. Step 2: Convert to fraction form
    2,976.30/4,107.72 = 1,930.14/x
  3. Step 3: Cross multiply
    2,976.30x = 4,107.72 × 1,930.14
  4. Step 4: Simplify right side
    2,976.30x = 7,928,474.68
  5. Step 5: Solve for x
    x = 7,928,474.68/2,976.30
  6. Step 6: Final answer
    x = 2,663.87

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1.5x scale

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.