Home / 5,112.78-7,670.19-1,825.79

Finding the Fourth Proportional to 5,112.78, 7,670.19 and 1,825.79

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Solution

The fourth proportional to 5,112.78, 7,670.19 and 1,825.79 is: 2,739.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.78 : 7,670.19 = 1,825.79 : x
  2. Step 2: Convert to fraction form
    5,112.78/7,670.19 = 1,825.79/x
  3. Step 3: Cross multiply
    5,112.78x = 7,670.19 × 1,825.79
  4. Step 4: Simplify right side
    5,112.78x = 14,004,117.85
  5. Step 5: Solve for x
    x = 14,004,117.85/5,112.78
  6. Step 6: Final answer
    x = 2,739.04

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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.