Home / 3,859.61-5,326.27-2,181.02

Finding the Fourth Proportional to 3,859.61, 5,326.27 and 2,181.02

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Solution

The fourth proportional to 3,859.61, 5,326.27 and 2,181.02 is: 3,009.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.61 : 5,326.27 = 2,181.02 : x
  2. Step 2: Convert to fraction form
    3,859.61/5,326.27 = 2,181.02/x
  3. Step 3: Cross multiply
    3,859.61x = 5,326.27 × 2,181.02
  4. Step 4: Simplify right side
    3,859.61x = 11,616,669.31
  5. Step 5: Solve for x
    x = 11,616,669.31/3,859.61
  6. Step 6: Final answer
    x = 3,009.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.