Home / 1,908.56-2,629.68-1,317.92

Finding the Fourth Proportional to 1,908.56, 2,629.68 and 1,317.92

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Solution

The fourth proportional to 1,908.56, 2,629.68 and 1,317.92 is: 1,815.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,908.56 : 2,629.68 = 1,317.92 : x
  2. Step 2: Convert to fraction form
    1,908.56/2,629.68 = 1,317.92/x
  3. Step 3: Cross multiply
    1,908.56x = 2,629.68 × 1,317.92
  4. Step 4: Simplify right side
    1,908.56x = 3,465,707.87
  5. Step 5: Solve for x
    x = 3,465,707.87/1,908.56
  6. Step 6: Final answer
    x = 1,815.88

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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.