Home / 1,928.39-2,892.26-629.86

Finding the Fourth Proportional to 1,928.39, 2,892.26 and 629.86

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Solution

The fourth proportional to 1,928.39, 2,892.26 and 629.86 is: 944.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.39 : 2,892.26 = 629.86 : x
  2. Step 2: Convert to fraction form
    1,928.39/2,892.26 = 629.86/x
  3. Step 3: Cross multiply
    1,928.39x = 2,892.26 × 629.86
  4. Step 4: Simplify right side
    1,928.39x = 1,821,713.23
  5. Step 5: Solve for x
    x = 1,821,713.23/1,928.39
  6. Step 6: Final answer
    x = 944.68

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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.