Home / 3,982.50-5,973.75-1,385.46

Finding the Fourth Proportional to 3,982.50, 5,973.75 and 1,385.46

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Solution

The fourth proportional to 3,982.50, 5,973.75 and 1,385.46 is: 2,078.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982.50 : 5,973.75 = 1,385.46 : x
  2. Step 2: Convert to fraction form
    3,982.50/5,973.75 = 1,385.46/x
  3. Step 3: Cross multiply
    3,982.50x = 5,973.75 × 1,385.46
  4. Step 4: Simplify right side
    3,982.50x = 8,276,391.68
  5. Step 5: Solve for x
    x = 8,276,391.68/3,982.50
  6. Step 6: Final answer
    x = 2,078.19

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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.