Home / 3,981.72-5,971.98-1,517.70

Finding the Fourth Proportional to 3,981.72, 5,971.98 and 1,517.70

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Solution

The fourth proportional to 3,981.72, 5,971.98 and 1,517.70 is: 2,276.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.72 : 5,971.98 = 1,517.70 : x
  2. Step 2: Convert to fraction form
    3,981.72/5,971.98 = 1,517.70/x
  3. Step 3: Cross multiply
    3,981.72x = 5,971.98 × 1,517.70
  4. Step 4: Simplify right side
    3,981.72x = 9,063,674.05
  5. Step 5: Solve for x
    x = 9,063,674.05/3,981.72
  6. Step 6: Final answer
    x = 2,276.32

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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.