Home / 3,917.70-5,874.54-1,318.74

Finding the Fourth Proportional to 3,917.70, 5,874.54 and 1,318.74

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Solution

The fourth proportional to 3,917.70, 5,874.54 and 1,318.74 is: 1,977.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.70 : 5,874.54 = 1,318.74 : x
  2. Step 2: Convert to fraction form
    3,917.70/5,874.54 = 1,318.74/x
  3. Step 3: Cross multiply
    3,917.70x = 5,874.54 × 1,318.74
  4. Step 4: Simplify right side
    3,917.70x = 7,746,990.88
  5. Step 5: Solve for x
    x = 7,746,990.88/3,917.70
  6. Step 6: Final answer
    x = 1,977.43

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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.