Home / 3,739.23-5,608.85-1,272.78

Finding the Fourth Proportional to 3,739.23, 5,608.85 and 1,272.78

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Solution

The fourth proportional to 3,739.23, 5,608.85 and 1,272.78 is: 1,909.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,739.23 : 5,608.85 = 1,272.78 : x
  2. Step 2: Convert to fraction form
    3,739.23/5,608.85 = 1,272.78/x
  3. Step 3: Cross multiply
    3,739.23x = 5,608.85 × 1,272.78
  4. Step 4: Simplify right side
    3,739.23x = 7,138,825.74
  5. Step 5: Solve for x
    x = 7,138,825.74/3,739.23
  6. Step 6: Final answer
    x = 1,909.17

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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.