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Finding the Fourth Proportional to 3,321.81, 4,982.31 and 1,373.76

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Solution

The fourth proportional to 3,321.81, 4,982.31 and 1,373.76 is: 2,060.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,321.81 : 4,982.31 = 1,373.76 : x
  2. Step 2: Convert to fraction form
    3,321.81/4,982.31 = 1,373.76/x
  3. Step 3: Cross multiply
    3,321.81x = 4,982.31 × 1,373.76
  4. Step 4: Simplify right side
    3,321.81x = 6,844,498.19
  5. Step 5: Solve for x
    x = 6,844,498.19/3,321.81
  6. Step 6: Final answer
    x = 2,060.47

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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.