Home / 3,685.49-5,086.12-2,113.88

Finding the Fourth Proportional to 3,685.49, 5,086.12 and 2,113.88

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Solution

The fourth proportional to 3,685.49, 5,086.12 and 2,113.88 is: 2,917.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,685.49 : 5,086.12 = 2,113.88 : x
  2. Step 2: Convert to fraction form
    3,685.49/5,086.12 = 2,113.88/x
  3. Step 3: Cross multiply
    3,685.49x = 5,086.12 × 2,113.88
  4. Step 4: Simplify right side
    3,685.49x = 10,751,447.35
  5. Step 5: Solve for x
    x = 10,751,447.35/3,685.49
  6. Step 6: Final answer
    x = 2,917.24

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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.