Home / 3,981.12-5,973.36-1,382.64

Finding the Fourth Proportional to 3,981.12, 5,973.36 and 1,382.64

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Solution

The fourth proportional to 3,981.12, 5,973.36 and 1,382.64 is: 2,074.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.12 : 5,973.36 = 1,382.64 : x
  2. Step 2: Convert to fraction form
    3,981.12/5,973.36 = 1,382.64/x
  3. Step 3: Cross multiply
    3,981.12x = 5,973.36 × 1,382.64
  4. Step 4: Simplify right side
    3,981.12x = 8,259,006.47
  5. Step 5: Solve for x
    x = 8,259,006.47/3,981.12
  6. Step 6: Final answer
    x = 2,074.54

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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.