Home / 2,286.96-3,430.44-919.92

Finding the Fourth Proportional to 2,286.96, 3,430.44 and 919.92

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Solution

The fourth proportional to 2,286.96, 3,430.44 and 919.92 is: 1,379.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,286.96 : 3,430.44 = 919.92 : x
  2. Step 2: Convert to fraction form
    2,286.96/3,430.44 = 919.92/x
  3. Step 3: Cross multiply
    2,286.96x = 3,430.44 × 919.92
  4. Step 4: Simplify right side
    2,286.96x = 3,155,730.36
  5. Step 5: Solve for x
    x = 3,155,730.36/2,286.96
  6. Step 6: Final answer
    x = 1,379.88

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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.