Home / 3,684.80-5,081.65-2,742.97

Finding the Fourth Proportional to 3,684.80, 5,081.65 and 2,742.97

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Solution

The fourth proportional to 3,684.80, 5,081.65 and 2,742.97 is: 3,782.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,684.80 : 5,081.65 = 2,742.97 : x
  2. Step 2: Convert to fraction form
    3,684.80/5,081.65 = 2,742.97/x
  3. Step 3: Cross multiply
    3,684.80x = 5,081.65 × 2,742.97
  4. Step 4: Simplify right side
    3,684.80x = 13,938,818.90
  5. Step 5: Solve for x
    x = 13,938,818.90/3,684.80
  6. Step 6: Final answer
    x = 3,782.79

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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.