Home / 3,982.49-5,971.80-1,208.66

Finding the Fourth Proportional to 3,982.49, 5,971.80 and 1,208.66

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Solution

The fourth proportional to 3,982.49, 5,971.80 and 1,208.66 is: 1,812.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982.49 : 5,971.80 = 1,208.66 : x
  2. Step 2: Convert to fraction form
    3,982.49/5,971.80 = 1,208.66/x
  3. Step 3: Cross multiply
    3,982.49x = 5,971.80 × 1,208.66
  4. Step 4: Simplify right side
    3,982.49x = 7,217,875.79
  5. Step 5: Solve for x
    x = 7,217,875.79/3,982.49
  6. Step 6: Final answer
    x = 1,812.40

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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.