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Finding the Fourth Proportional to 5,151.54, 7,727.16 and 1,255.89

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Solution

The fourth proportional to 5,151.54, 7,727.16 and 1,255.89 is: 1,883.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,151.54 : 7,727.16 = 1,255.89 : x
  2. Step 2: Convert to fraction form
    5,151.54/7,727.16 = 1,255.89/x
  3. Step 3: Cross multiply
    5,151.54x = 7,727.16 × 1,255.89
  4. Step 4: Simplify right side
    5,151.54x = 9,704,462.97
  5. Step 5: Solve for x
    x = 9,704,462.97/5,151.54
  6. Step 6: Final answer
    x = 1,883.80

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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.