Home / 1,558.28-2,149.65-1,028.09

Finding the Fourth Proportional to 1,558.28, 2,149.65 and 1,028.09

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Solution

The fourth proportional to 1,558.28, 2,149.65 and 1,028.09 is: 1,418.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,558.28 : 2,149.65 = 1,028.09 : x
  2. Step 2: Convert to fraction form
    1,558.28/2,149.65 = 1,028.09/x
  3. Step 3: Cross multiply
    1,558.28x = 2,149.65 × 1,028.09
  4. Step 4: Simplify right side
    1,558.28x = 2,210,022.92
  5. Step 5: Solve for x
    x = 2,210,022.92/1,558.28
  6. Step 6: Final answer
    x = 1,418.25

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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.