Home / 3,685.70-5,086.29-2,113.90

Finding the Fourth Proportional to 3,685.70, 5,086.29 and 2,113.90

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Solution

The fourth proportional to 3,685.70, 5,086.29 and 2,113.90 is: 2,917.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,685.70 : 5,086.29 = 2,113.90 : x
  2. Step 2: Convert to fraction form
    3,685.70/5,086.29 = 2,113.90/x
  3. Step 3: Cross multiply
    3,685.70x = 5,086.29 × 2,113.90
  4. Step 4: Simplify right side
    3,685.70x = 10,751,903.64
  5. Step 5: Solve for x
    x = 10,751,903.64/3,685.70
  6. Step 6: Final answer
    x = 2,917.19

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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.