Home / 3,906.36-5,859.51-1,309.28

Finding the Fourth Proportional to 3,906.36, 5,859.51 and 1,309.28

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Solution

The fourth proportional to 3,906.36, 5,859.51 and 1,309.28 is: 1,963.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,906.36 : 5,859.51 = 1,309.28 : x
  2. Step 2: Convert to fraction form
    3,906.36/5,859.51 = 1,309.28/x
  3. Step 3: Cross multiply
    3,906.36x = 5,859.51 × 1,309.28
  4. Step 4: Simplify right side
    3,906.36x = 7,671,739.25
  5. Step 5: Solve for x
    x = 7,671,739.25/3,906.36
  6. Step 6: Final answer
    x = 1,963.91

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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.