Home / 3,888.44-5,359.56-2,891.96

Finding the Fourth Proportional to 3,888.44, 5,359.56 and 2,891.96

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Solution

The fourth proportional to 3,888.44, 5,359.56 and 2,891.96 is: 3,986.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.44 : 5,359.56 = 2,891.96 : x
  2. Step 2: Convert to fraction form
    3,888.44/5,359.56 = 2,891.96/x
  3. Step 3: Cross multiply
    3,888.44x = 5,359.56 × 2,891.96
  4. Step 4: Simplify right side
    3,888.44x = 15,499,633.14
  5. Step 5: Solve for x
    x = 15,499,633.14/3,888.44
  6. Step 6: Final answer
    x = 3,986.08

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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.