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Finding the Fourth Proportional to 5,169.36, 7,749.36 and 1,881.78

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Solution

The fourth proportional to 5,169.36, 7,749.36 and 1,881.78 is: 2,820.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,169.36 : 7,749.36 = 1,881.78 : x
  2. Step 2: Convert to fraction form
    5,169.36/7,749.36 = 1,881.78/x
  3. Step 3: Cross multiply
    5,169.36x = 7,749.36 × 1,881.78
  4. Step 4: Simplify right side
    5,169.36x = 14,582,590.66
  5. Step 5: Solve for x
    x = 14,582,590.66/5,169.36
  6. Step 6: Final answer
    x = 2,820.97

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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.