Home / 3,981.34-5,971.98-1,208.08

Finding the Fourth Proportional to 3,981.34, 5,971.98 and 1,208.08

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Solution

The fourth proportional to 3,981.34, 5,971.98 and 1,208.08 is: 1,812.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.34 : 5,971.98 = 1,208.08 : x
  2. Step 2: Convert to fraction form
    3,981.34/5,971.98 = 1,208.08/x
  3. Step 3: Cross multiply
    3,981.34x = 5,971.98 × 1,208.08
  4. Step 4: Simplify right side
    3,981.34x = 7,214,629.60
  5. Step 5: Solve for x
    x = 7,214,629.60/3,981.34
  6. Step 6: Final answer
    x = 1,812.11

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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.