Home / 3,917.14-5,875.72-1,321.90

Finding the Fourth Proportional to 3,917.14, 5,875.72 and 1,321.90

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Solution

The fourth proportional to 3,917.14, 5,875.72 and 1,321.90 is: 1,982.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.14 : 5,875.72 = 1,321.90 : x
  2. Step 2: Convert to fraction form
    3,917.14/5,875.72 = 1,321.90/x
  3. Step 3: Cross multiply
    3,917.14x = 5,875.72 × 1,321.90
  4. Step 4: Simplify right side
    3,917.14x = 7,767,114.27
  5. Step 5: Solve for x
    x = 7,767,114.27/3,917.14
  6. Step 6: Final answer
    x = 1,982.85

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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.