Home / 3,918.86-5,874.15-1,285.67

Finding the Fourth Proportional to 3,918.86, 5,874.15 and 1,285.67

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Solution

The fourth proportional to 3,918.86, 5,874.15 and 1,285.67 is: 1,927.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.86 : 5,874.15 = 1,285.67 : x
  2. Step 2: Convert to fraction form
    3,918.86/5,874.15 = 1,285.67/x
  3. Step 3: Cross multiply
    3,918.86x = 5,874.15 × 1,285.67
  4. Step 4: Simplify right side
    3,918.86x = 7,552,237.94
  5. Step 5: Solve for x
    x = 7,552,237.94/3,918.86
  6. Step 6: Final answer
    x = 1,927.15

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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.