Home / 5,175.12-7,762.64-1,279.54

Finding the Fourth Proportional to 5,175.12, 7,762.64 and 1,279.54

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Solution

The fourth proportional to 5,175.12, 7,762.64 and 1,279.54 is: 1,919.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,175.12 : 7,762.64 = 1,279.54 : x
  2. Step 2: Convert to fraction form
    5,175.12/7,762.64 = 1,279.54/x
  3. Step 3: Cross multiply
    5,175.12x = 7,762.64 × 1,279.54
  4. Step 4: Simplify right side
    5,175.12x = 9,932,608.39
  5. Step 5: Solve for x
    x = 9,932,608.39/5,175.12
  6. Step 6: Final answer
    x = 1,919.30

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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.