Home / 3,867.81-5,335.57-2,449.09

Finding the Fourth Proportional to 3,867.81, 5,335.57 and 2,449.09

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Solution

The fourth proportional to 3,867.81, 5,335.57 and 2,449.09 is: 3,378.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,867.81 : 5,335.57 = 2,449.09 : x
  2. Step 2: Convert to fraction form
    3,867.81/5,335.57 = 2,449.09/x
  3. Step 3: Cross multiply
    3,867.81x = 5,335.57 × 2,449.09
  4. Step 4: Simplify right side
    3,867.81x = 13,067,291.13
  5. Step 5: Solve for x
    x = 13,067,291.13/3,867.81
  6. Step 6: Final answer
    x = 3,378.47

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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.