Home / 3,983.32-5,973.18-1,385.80

Finding the Fourth Proportional to 3,983.32, 5,973.18 and 1,385.80

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Solution

The fourth proportional to 3,983.32, 5,973.18 and 1,385.80 is: 2,078.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,983.32 : 5,973.18 = 1,385.80 : x
  2. Step 2: Convert to fraction form
    3,983.32/5,973.18 = 1,385.80/x
  3. Step 3: Cross multiply
    3,983.32x = 5,973.18 × 1,385.80
  4. Step 4: Simplify right side
    3,983.32x = 8,277,632.84
  5. Step 5: Solve for x
    x = 8,277,632.84/3,983.32
  6. Step 6: Final answer
    x = 2,078.07

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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.