Home / 3,859.88-5,326.35-2,181.35

Finding the Fourth Proportional to 3,859.88, 5,326.35 and 2,181.35

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Solution

The fourth proportional to 3,859.88, 5,326.35 and 2,181.35 is: 3,010.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.88 : 5,326.35 = 2,181.35 : x
  2. Step 2: Convert to fraction form
    3,859.88/5,326.35 = 2,181.35/x
  3. Step 3: Cross multiply
    3,859.88x = 5,326.35 × 2,181.35
  4. Step 4: Simplify right side
    3,859.88x = 11,618,606.94
  5. Step 5: Solve for x
    x = 11,618,606.94/3,859.88
  6. Step 6: Final answer
    x = 3,010.10

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1.5x scale

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.