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Finding the Fourth Proportional to 5,192.54, 7,788.84 and 1,296.80

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Solution

The fourth proportional to 5,192.54, 7,788.84 and 1,296.80 is: 1,945.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,192.54 : 7,788.84 = 1,296.80 : x
  2. Step 2: Convert to fraction form
    5,192.54/7,788.84 = 1,296.80/x
  3. Step 3: Cross multiply
    5,192.54x = 7,788.84 × 1,296.80
  4. Step 4: Simplify right side
    5,192.54x = 10,100,567.71
  5. Step 5: Solve for x
    x = 10,100,567.71/5,192.54
  6. Step 6: Final answer
    x = 1,945.21

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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.