Home / 3,859.68-5,326.55-2,181.16

Finding the Fourth Proportional to 3,859.68, 5,326.55 and 2,181.16

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Solution

The fourth proportional to 3,859.68, 5,326.55 and 2,181.16 is: 3,010.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.68 : 5,326.55 = 2,181.16 : x
  2. Step 2: Convert to fraction form
    3,859.68/5,326.55 = 2,181.16/x
  3. Step 3: Cross multiply
    3,859.68x = 5,326.55 × 2,181.16
  4. Step 4: Simplify right side
    3,859.68x = 11,618,057.80
  5. Step 5: Solve for x
    x = 11,618,057.80/3,859.68
  6. Step 6: Final answer
    x = 3,010.11

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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.