Home / 1,919.09-2,648.82-1,359.65

Finding the Fourth Proportional to 1,919.09, 2,648.82 and 1,359.65

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Solution

The fourth proportional to 1,919.09, 2,648.82 and 1,359.65 is: 1,876.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.09 : 2,648.82 = 1,359.65 : x
  2. Step 2: Convert to fraction form
    1,919.09/2,648.82 = 1,359.65/x
  3. Step 3: Cross multiply
    1,919.09x = 2,648.82 × 1,359.65
  4. Step 4: Simplify right side
    1,919.09x = 3,601,454.87
  5. Step 5: Solve for x
    x = 3,601,454.87/1,919.09
  6. Step 6: Final answer
    x = 1,876.65

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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.