Home / 3,981.62-5,971.76-1,207.63

Finding the Fourth Proportional to 3,981.62, 5,971.76 and 1,207.63

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Solution

The fourth proportional to 3,981.62, 5,971.76 and 1,207.63 is: 1,811.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.62 : 5,971.76 = 1,207.63 : x
  2. Step 2: Convert to fraction form
    3,981.62/5,971.76 = 1,207.63/x
  3. Step 3: Cross multiply
    3,981.62x = 5,971.76 × 1,207.63
  4. Step 4: Simplify right side
    3,981.62x = 7,211,648.89
  5. Step 5: Solve for x
    x = 7,211,648.89/3,981.62
  6. Step 6: Final answer
    x = 1,811.23

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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.