Home / 2,619.92-3,931.32-2,213.84

Finding the Fourth Proportional to 2,619.92, 3,931.32 and 2,213.84

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Solution

The fourth proportional to 2,619.92, 3,931.32 and 2,213.84 is: 3,321.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.92 : 3,931.32 = 2,213.84 : x
  2. Step 2: Convert to fraction form
    2,619.92/3,931.32 = 2,213.84/x
  3. Step 3: Cross multiply
    2,619.92x = 3,931.32 × 2,213.84
  4. Step 4: Simplify right side
    2,619.92x = 8,703,313.47
  5. Step 5: Solve for x
    x = 8,703,313.47/2,619.92
  6. Step 6: Final answer
    x = 3,321.98

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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.