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Finding the Fourth Proportional to 1,919.75, 2,879.63 and 1,301.92

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Solution

The fourth proportional to 1,919.75, 2,879.63 and 1,301.92 is: 1,952.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.75 : 2,879.63 = 1,301.92 : x
  2. Step 2: Convert to fraction form
    1,919.75/2,879.63 = 1,301.92/x
  3. Step 3: Cross multiply
    1,919.75x = 2,879.63 × 1,301.92
  4. Step 4: Simplify right side
    1,919.75x = 3,749,055.26
  5. Step 5: Solve for x
    x = 3,749,055.26/1,919.75
  6. Step 6: Final answer
    x = 1,952.89

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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.