Home / 3,664.65-5,057.21-1,986.05

Finding the Fourth Proportional to 3,664.65, 5,057.21 and 1,986.05

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Solution

The fourth proportional to 3,664.65, 5,057.21 and 1,986.05 is: 2,740.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,664.65 : 5,057.21 = 1,986.05 : x
  2. Step 2: Convert to fraction form
    3,664.65/5,057.21 = 1,986.05/x
  3. Step 3: Cross multiply
    3,664.65x = 5,057.21 × 1,986.05
  4. Step 4: Simplify right side
    3,664.65x = 10,043,883.94
  5. Step 5: Solve for x
    x = 10,043,883.94/3,664.65
  6. Step 6: Final answer
    x = 2,740.75

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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.