Home / 3,628.41-5,445.69-1,986.11

Finding the Fourth Proportional to 3,628.41, 5,445.69 and 1,986.11

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Solution

The fourth proportional to 3,628.41, 5,445.69 and 1,986.11 is: 2,980.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,628.41 : 5,445.69 = 1,986.11 : x
  2. Step 2: Convert to fraction form
    3,628.41/5,445.69 = 1,986.11/x
  3. Step 3: Cross multiply
    3,628.41x = 5,445.69 × 1,986.11
  4. Step 4: Simplify right side
    3,628.41x = 10,815,739.37
  5. Step 5: Solve for x
    x = 10,815,739.37/3,628.41
  6. Step 6: Final answer
    x = 2,980.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.