Home / 2,625.44-3,939.12-1,220.51

Finding the Fourth Proportional to 2,625.44, 3,939.12 and 1,220.51

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Solution

The fourth proportional to 2,625.44, 3,939.12 and 1,220.51 is: 1,831.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,625.44 : 3,939.12 = 1,220.51 : x
  2. Step 2: Convert to fraction form
    2,625.44/3,939.12 = 1,220.51/x
  3. Step 3: Cross multiply
    2,625.44x = 3,939.12 × 1,220.51
  4. Step 4: Simplify right side
    2,625.44x = 4,807,735.35
  5. Step 5: Solve for x
    x = 4,807,735.35/2,625.44
  6. Step 6: Final answer
    x = 1,831.21

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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.