Home / 1,919.97-2,650.01-1,123.68

Finding the Fourth Proportional to 1,919.97, 2,650.01 and 1,123.68

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Solution

The fourth proportional to 1,919.97, 2,650.01 and 1,123.68 is: 1,550.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.97 : 2,650.01 = 1,123.68 : x
  2. Step 2: Convert to fraction form
    1,919.97/2,650.01 = 1,123.68/x
  3. Step 3: Cross multiply
    1,919.97x = 2,650.01 × 1,123.68
  4. Step 4: Simplify right side
    1,919.97x = 2,977,757.62
  5. Step 5: Solve for x
    x = 2,977,757.62/1,919.97
  6. Step 6: Final answer
    x = 1,550.94

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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.