Home / 3,984.36-5,972.46-1,385.88

Finding the Fourth Proportional to 3,984.36, 5,972.46 and 1,385.88

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Solution

The fourth proportional to 3,984.36, 5,972.46 and 1,385.88 is: 2,077.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,984.36 : 5,972.46 = 1,385.88 : x
  2. Step 2: Convert to fraction form
    3,984.36/5,972.46 = 1,385.88/x
  3. Step 3: Cross multiply
    3,984.36x = 5,972.46 × 1,385.88
  4. Step 4: Simplify right side
    3,984.36x = 8,277,112.86
  5. Step 5: Solve for x
    x = 8,277,112.86/3,984.36
  6. Step 6: Final answer
    x = 2,077.40

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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.