Home / 3,984.42-5,973.21-1,387.02

Finding the Fourth Proportional to 3,984.42, 5,973.21 and 1,387.02

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Solution

The fourth proportional to 3,984.42, 5,973.21 and 1,387.02 is: 2,079.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,984.42 : 5,973.21 = 1,387.02 : x
  2. Step 2: Convert to fraction form
    3,984.42/5,973.21 = 1,387.02/x
  3. Step 3: Cross multiply
    3,984.42x = 5,973.21 × 1,387.02
  4. Step 4: Simplify right side
    3,984.42x = 8,284,961.73
  5. Step 5: Solve for x
    x = 8,284,961.73/3,984.42
  6. Step 6: Final answer
    x = 2,079.34

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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.